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Номер 705, страница 178 - гдз по геометрии 10-11 класс учебник Атанасян, Бутузов
Авторы: Атанасян Л. С., Бутузов В. Ф., Кадомцев С. Б., Позняк Э. Г., Киселёва Л. С.
Тип: Учебник
Издательство: Просвещение
Год издания: 2019 - 2026
Уровень обучения: базовый и углублённый
Цвет обложки: коричневый с ромбами
ISBN: 978-5-09-103606-0 (2023)
Допущено Министерством просвещения Российской Федерации
Математика: алгебра и начала математического анализа, геометрия
Популярные ГДЗ в 10 классе
Глава 7. Метод координат в пространстве. Движения. Параграф 2. Скалярное произведение векторов - номер 705, страница 178.
App\Models\Task {#1030 // resources/views/models/task/default.blade.php #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 745120 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "178" "field_page_end" => null "field_url" => "/10-klass/geometrija/atanasjan-uchebnik/00-705" "field_display_title" => "705" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1037 #items: array:1 [ 0 => App\Models\Term {#1036 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 26 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "номер" "field_cases" => array:6 [ "field_accusative_case" => "номер" "field_creative_case" => "номером" "field_dative_case" => "номеру" "field_genitive_case" => "номера" "field_nominative_case" => "номер" "field_prepositional_case" => "номере" ] "field_short_name" => "№" ] #original: array:6 [ "id" => 26 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "номер" "field_cases" => array:6 [ "field_accusative_case" => "номер" "field_creative_case" => "номером" "field_dative_case" => "номеру" "field_genitive_case" => "номера" "field_nominative_case" => "номер" "field_prepositional_case" => "номере" ] "field_short_name" => "№" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1035 #items: [] #escapeWhenCastingToString: false } "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1079 #items: array:1 [ 0 => App\Models\Branch {#1034 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 744405 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Метод координат в пространстве. Движения" "field_branch_order" => "7" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1039 #items: array:1 [ 0 => App\Models\Term {#1038 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 29 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Глава" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => null ] #original: array:7 [ "id" => 29 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Глава" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_page_start" => "160" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1040 #items: array:1 [ 0 => App\Models\Book {#1041 #connection: "mysql" #table: "books" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:50 [ "id" => 36 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1042 …2} "field_class" => Illuminate\Database\Eloquent\Collection {#1044 …2} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1047 …2} "field_author" => Illuminate\Database\Eloquent\Collection {#1049 …2} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1055 …2} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1056 …2} "field_country" => Illuminate\Database\Eloquent\Collection {#1058 …2} "field_city" => Illuminate\Database\Eloquent\Collection {#1060 …2} "field_series" => Illuminate\Database\Eloquent\Collection {#1062 …2} "field_umk" => Illuminate\Database\Eloquent\Collection {#1063 …2} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1064 …2} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1066 …2} "field_publication_number" => "11" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1068 …2} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1070 …2} "field_under_the_edition_degree" => null "field_cover_description" => "с ромбами" "field_publication_year" => "2019" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => "Учебник для общеобразовательных организаций" "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => "Математика: алгебра и начала математического анализа, геометрия" "field_link_to_source" => null "field_tasks_count" => "1147" "field_priority" => "12" "field_default_folder" => "/geometrija_10/atanasjan-u23/" "field_isbn" => "978-5-09-103606-0 (2023)" "field_cover" => array:1 [ …1] "field_cover_alts" => array:1 [ …1] "field_covers" => array:1 [ …1] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1071 …2} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1072 …2} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1073 …2} "field_url" => "/10-klass/geometrija/atanasjan-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1074 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ …3] ] #original: array:50 [ "id" => 36 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1042 …2} "field_class" => Illuminate\Database\Eloquent\Collection {#1044 …2} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1047 …2} "field_author" => Illuminate\Database\Eloquent\Collection {#1049 …2} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1055 …2} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1056 …2} "field_country" => Illuminate\Database\Eloquent\Collection {#1058 …2} "field_city" => Illuminate\Database\Eloquent\Collection {#1060 …2} "field_series" => Illuminate\Database\Eloquent\Collection {#1062 …2} "field_umk" => Illuminate\Database\Eloquent\Collection {#1063 …2} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1064 …2} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1066 …2} "field_publication_number" => "11" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1068 …2} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1070 …2} "field_under_the_edition_degree" => null "field_cover_description" => "с ромбами" "field_publication_year" => "2019" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => "Учебник для общеобразовательных организаций" "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => "Математика: алгебра и начала математического анализа, геометрия" "field_link_to_source" => null "field_tasks_count" => "1147" "field_priority" => "12" "field_default_folder" => "/geometrija_10/atanasjan-u23/" "field_isbn" => "978-5-09-103606-0 (2023)" "field_cover" => array:1 [ …1] "field_cover_alts" => array:1 [ …1] "field_covers" => array:1 [ …1] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1071 …2} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1072 …2} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1073 …2} "field_url" => "/10-klass/geometrija/atanasjan-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1074 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ …3] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1076 #items: [] #escapeWhenCastingToString: false } ] #original: array:24 [ "id" => 744405 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Метод координат в пространстве. Движения" "field_branch_order" => "7" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1039} "field_page_start" => "160" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1040} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1076} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "parent_branches" => Illuminate\Database\Eloquent\Collection {#1163 #items: array:2 [ 0 => App\Models\Branch {#1077 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 744405 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Метод координат в пространстве. Движения" "field_branch_order" => "7" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1080 #items: array:1 [ 0 => App\Models\Term {#1078 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 29 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Глава" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => null ] #original: array:7 [ "id" => 29 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Глава" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_page_start" => "160" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1081 #items: array:1 [ 0 => App\Models\Book {#1082 #connection: "mysql" #table: "books" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:50 [ "id" => 36 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1083 …2} "field_class" => Illuminate\Database\Eloquent\Collection {#1085 …2} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1088 …2} "field_author" => Illuminate\Database\Eloquent\Collection {#1090 …2} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1096 …2} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1097 …2} "field_country" => Illuminate\Database\Eloquent\Collection {#1099 …2} "field_city" => Illuminate\Database\Eloquent\Collection {#1101 …2} "field_series" => Illuminate\Database\Eloquent\Collection {#1103 …2} "field_umk" => Illuminate\Database\Eloquent\Collection {#1104 …2} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1105 …2} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1107 …2} "field_publication_number" => "11" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1109 …2} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1111 …2} "field_under_the_edition_degree" => null "field_cover_description" => "с ромбами" "field_publication_year" => "2019" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => "Учебник для общеобразовательных организаций" "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => "Математика: алгебра и начала математического анализа, геометрия" "field_link_to_source" => null "field_tasks_count" => "1147" "field_priority" => "12" "field_default_folder" => "/geometrija_10/atanasjan-u23/" "field_isbn" => "978-5-09-103606-0 (2023)" "field_cover" => array:1 [ …1] "field_cover_alts" => array:1 [ …1] "field_covers" => array:1 [ …1] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1112 …2} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1113 …2} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1114 …2} "field_url" => "/10-klass/geometrija/atanasjan-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1115 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ …3] ] #original: array:50 [ "id" => 36 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1083 …2} "field_class" => Illuminate\Database\Eloquent\Collection {#1085 …2} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1088 …2} "field_author" => Illuminate\Database\Eloquent\Collection {#1090 …2} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1096 …2} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1097 …2} "field_country" => Illuminate\Database\Eloquent\Collection {#1099 …2} "field_city" => Illuminate\Database\Eloquent\Collection {#1101 …2} "field_series" => Illuminate\Database\Eloquent\Collection {#1103 …2} "field_umk" => Illuminate\Database\Eloquent\Collection {#1104 …2} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1105 …2} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1107 …2} "field_publication_number" => "11" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1109 …2} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1111 …2} "field_under_the_edition_degree" => null "field_cover_description" => "с ромбами" "field_publication_year" => "2019" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => "Учебник для общеобразовательных организаций" "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => "Математика: алгебра и начала математического анализа, геометрия" "field_link_to_source" => null "field_tasks_count" => "1147" "field_priority" => "12" "field_default_folder" => "/geometrija_10/atanasjan-u23/" "field_isbn" => "978-5-09-103606-0 (2023)" "field_cover" => array:1 [ …1] "field_cover_alts" => array:1 [ …1] "field_covers" => array:1 [ …1] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1112 …2} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1113 …2} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1114 …2} "field_url" => "/10-klass/geometrija/atanasjan-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1115 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ …3] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1117 #items: [] #escapeWhenCastingToString: false } ] #original: array:24 [ "id" => 744405 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Метод координат в пространстве. Движения" "field_branch_order" => "7" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1080} "field_page_start" => "160" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1081} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1117} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 1 => App\Models\Branch {#1118 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 744407 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Скалярное произведение векторов" "field_branch_order" => "2" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1119 #items: array:1 [ 0 => App\Models\Term {#1120 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 32 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Параграф" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => "§" ] #original: array:7 [ "id" => 32 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Параграф" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => null "field_short_name" => "§" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_page_start" => "171" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1121 #items: array:1 [ 0 => App\Models\Book {#1122 #connection: "mysql" #table: "books" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:50 [ "id" => 36 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1123 …2} "field_class" => Illuminate\Database\Eloquent\Collection {#1125 …2} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1128 …2} "field_author" => Illuminate\Database\Eloquent\Collection {#1130 …2} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1136 …2} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1137 …2} "field_country" => Illuminate\Database\Eloquent\Collection {#1139 …2} "field_city" => Illuminate\Database\Eloquent\Collection {#1141 …2} "field_series" => Illuminate\Database\Eloquent\Collection {#1143 …2} "field_umk" => Illuminate\Database\Eloquent\Collection {#1144 …2} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1145 …2} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1147 …2} "field_publication_number" => "11" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1149 …2} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1151 …2} "field_under_the_edition_degree" => null "field_cover_description" => "с ромбами" "field_publication_year" => "2019" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => "Учебник для общеобразовательных организаций" "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => "Математика: алгебра и начала математического анализа, геометрия" "field_link_to_source" => null "field_tasks_count" => "1147" "field_priority" => "12" "field_default_folder" => "/geometrija_10/atanasjan-u23/" "field_isbn" => "978-5-09-103606-0 (2023)" "field_cover" => array:1 [ …1] "field_cover_alts" => array:1 [ …1] "field_covers" => array:1 [ …1] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1152 …2} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1153 …2} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1154 …2} "field_url" => "/10-klass/geometrija/atanasjan-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1155 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ …3] ] #original: array:50 [ "id" => 36 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1123 …2} "field_class" => Illuminate\Database\Eloquent\Collection {#1125 …2} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1128 …2} "field_author" => Illuminate\Database\Eloquent\Collection {#1130 …2} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1136 …2} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1137 …2} "field_country" => Illuminate\Database\Eloquent\Collection {#1139 …2} "field_city" => Illuminate\Database\Eloquent\Collection {#1141 …2} "field_series" => Illuminate\Database\Eloquent\Collection {#1143 …2} "field_umk" => Illuminate\Database\Eloquent\Collection {#1144 …2} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1145 …2} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1147 …2} "field_publication_number" => "11" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1149 …2} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1151 …2} "field_under_the_edition_degree" => null "field_cover_description" => "с ромбами" "field_publication_year" => "2019" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => "Учебник для общеобразовательных организаций" "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => "Математика: алгебра и начала математического анализа, геометрия" "field_link_to_source" => null "field_tasks_count" => "1147" "field_priority" => "12" "field_default_folder" => "/geometrija_10/atanasjan-u23/" "field_isbn" => "978-5-09-103606-0 (2023)" "field_cover" => array:1 [ …1] "field_cover_alts" => array:1 [ …1] "field_covers" => array:1 [ …1] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1152 …2} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1153 …2} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1154 …2} "field_url" => "/10-klass/geometrija/atanasjan-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1155 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ …3] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1157 #items: array:1 [ 0 => App\Models\Branch {#1158 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 744405 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Метод координат в пространстве. Движения" "field_branch_order" => "7" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1159 …2} "field_page_start" => "160" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1161 …2} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1162 …2} ] #original: array:24 [ "id" => 744405 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Метод координат в пространстве. Движения" "field_branch_order" => "7" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1159 …2} "field_page_start" => "160" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1161 …2} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1162 …2} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } ] #original: array:24 [ "id" => 744407 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Скалярное произведение векторов" "field_branch_order" => "2" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1119} "field_page_start" => "171" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1121} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1157} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1164 #items: array:6 [ 0 => App\Models\Element {#1178 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 939591 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1187 #items: array:1 [ 0 => App\Models\Edition {#1179 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 2315 "created_at" => "2026-04-10 13:58:26" …19 ] #original: array:21 [ …21] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "745120" "type" => "task" ] "text" => """ <p><strong>705.</strong> Вычислите угол между прямыми <em>AB</em> и <em>CD</em>, если:</p><figure><figure>\n <img src="/media/geometrija_10/atanasjan-u23/0-00/705.webp?ts=1745781893" alt="Вычислить угол между прямыми AB и CD" loading="lazy" width="1416" height="330">\n </figure>\n <figcaption> </figcaption></figure> """ "img" => array:1 [ 0 => array:5 [ "name" => "705-1.jpg" "alt" => null "width" => "1562" "height" => 313 "path" => "/media/geometrija_10/atanasjan-u23/0-00/705-1.webp?ts=1739436846" ] ] ] #original: array:7 [ "id" => 939591 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1187} "task" => array:2 [ "refs" => "745120" "type" => "task" ] "text" => """ <p><strong>705.</strong> Вычислите угол между прямыми <em>AB</em> и <em>CD</em>, если:</p><figure><figure>\n <img src="/media/geometrija_10/atanasjan-u23/0-00/705.webp?ts=1745781893" alt="Вычислить угол между прямыми AB и CD" loading="lazy" width="1416" height="330">\n </figure>\n <figcaption> </figcaption></figure> """ "img" => array:1 [ 0 => array:5 [ "name" => "705-1.jpg" "alt" => null "width" => "1562" "height" => 313 "path" => "/media/geometrija_10/atanasjan-u23/0-00/705-1.webp?ts=1739436846" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 1 => App\Models\Element {#1209 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 942565 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1219 #items: array:1 [ 0 => App\Models\Edition {#1210 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ …21] #original: array:21 [ …21] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "745120" "type" => "task" ] "img" => array:4 [ 0 => array:5 [ "name" => "705-1.png" "alt" => null "width" => "694" "height" => 1931 "path" => "/media/geometrija_10/atanasjan-u23/2-00/705-1.webp?ts=1739441614" ] 1 => array:5 [ "name" => "705-2.png" "alt" => null "width" => "694" "height" => 1953 "path" => "/media/geometrija_10/atanasjan-u23/2-00/705-2.webp?ts=1739441614" ] 2 => array:5 [ "name" => "705-3.png" "alt" => null "width" => "694" "height" => 1960 "path" => "/media/geometrija_10/atanasjan-u23/2-00/705-3.webp?ts=1739441614" ] 3 => array:5 [ "name" => "705-4.png" "alt" => null "width" => "694" "height" => 2014 "path" => "/media/geometrija_10/atanasjan-u23/2-00/705-4.webp?ts=1739441614" ] ] ] #original: array:6 [ "id" => 942565 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1219} "task" => array:2 [ "refs" => "745120" "type" => "task" ] "img" => array:4 [ 0 => array:5 [ "name" => "705-1.png" "alt" => null "width" => "694" "height" => 1931 "path" => "/media/geometrija_10/atanasjan-u23/2-00/705-1.webp?ts=1739441614" ] 1 => array:5 [ "name" => "705-2.png" "alt" => null "width" => "694" "height" => 1953 "path" => "/media/geometrija_10/atanasjan-u23/2-00/705-2.webp?ts=1739441614" ] 2 => array:5 [ "name" => "705-3.png" "alt" => null "width" => "694" "height" => 1960 "path" => "/media/geometrija_10/atanasjan-u23/2-00/705-3.webp?ts=1739441614" ] 3 => array:5 [ "name" => "705-4.png" "alt" => null "width" => "694" "height" => 2014 "path" => "/media/geometrija_10/atanasjan-u23/2-00/705-4.webp?ts=1739441614" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 2 => App\Models\Element {#1201 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 942389 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1211 #items: array:1 [ 0 => App\Models\Edition {#1202 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ …21] #original: array:21 [ …21] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "745120" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "705-1.jpg" "alt" => null "width" => "1305" "height" => 906 "path" => "/media/geometrija_10/atanasjan-u23/3-00/705-1.webp?ts=1739437149" ] ] ] #original: array:6 [ "id" => 942389 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1211} "task" => array:2 [ "refs" => "745120" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "705-1.jpg" "alt" => null "width" => "1305" "height" => 906 "path" => "/media/geometrija_10/atanasjan-u23/3-00/705-1.webp?ts=1739437149" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 3 => App\Models\Element {#1185 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 941857 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1195 #items: array:1 [ 0 => App\Models\Edition {#1186 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ …21] #original: array:21 [ …21] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "745120" "type" => "task" ] "img" => array:2 [ 0 => array:5 [ "name" => "705-1.jpg" "alt" => null "width" => "1423" "height" => 779 "path" => "/media/geometrija_10/atanasjan-u23/4-00/705-1.webp?ts=1739436713" ] 1 => array:5 [ "name" => "705-2.jpg" "alt" => null "width" => "1423" "height" => 779 "path" => "/media/geometrija_10/atanasjan-u23/4-00/705-2.webp?ts=1739436713" ] ] ] #original: array:6 [ "id" => 941857 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1195} "task" => array:2 [ "refs" => "745120" "type" => "task" ] "img" => array:2 [ 0 => array:5 [ "name" => "705-1.jpg" "alt" => null "width" => "1423" "height" => 779 "path" => "/media/geometrija_10/atanasjan-u23/4-00/705-1.webp?ts=1739436713" ] 1 => array:5 [ "name" => "705-2.jpg" "alt" => null "width" => "1423" "height" => 779 "path" => "/media/geometrija_10/atanasjan-u23/4-00/705-2.webp?ts=1739436713" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 4 => App\Models\Element {#1193 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 941978 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1203 #items: array:1 [ 0 => App\Models\Edition {#1194 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ …21] #original: array:21 [ …21] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "745120" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "705-1.jpg" "alt" => null "width" => "510" "height" => 772 "path" => "/media/geometrija_10/atanasjan-u23/5-00/705-1.webp?ts=1739436728" ] ] ] #original: array:6 [ "id" => 941978 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1203} "task" => array:2 [ "refs" => "745120" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "705-1.jpg" "alt" => null "width" => "510" "height" => 772 "path" => "/media/geometrija_10/atanasjan-u23/5-00/705-1.webp?ts=1739436728" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 5 => App\Models\Element {#1217 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 1352433 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1227 #items: array:1 [ 0 => App\Models\Edition {#1218 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ …21] #original: array:21 [ …21] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "745120" "type" => "task" ] "text" => "<p>Угол $\phi$ между двумя прямыми в пространстве определяется как острый угол между их направляющими векторами $\vec{u}$ и $\vec{v}$. Косинус этого угла вычисляется по формуле:</p><p>$\cos \phi = \frac{|\vec{u} \cdot \vec{v}|}{|\vec{u}| \cdot |\vec{v}|}$</p><p>где $\vec{u} \cdot \vec{v}$ - скалярное произведение векторов, а $|\vec{u}|$ и $|\vec{v}|$ - их длины (модули). Направляющий вектор прямой, проходящей через точки $M_1(x_1, y_1, z_1)$ и $M_2(x_2, y_2, z_2)$, находится как $\vec{M_1M_2} = (x_2-x_1, y_2-y_1, z_2-z_1)$.</p><strong>а)</strong><p>Найдем направляющие векторы прямых AB и CD для точек A(3; -2; 4), B(4; -1; 2), C(6; -3; 2), D(7; -3; 1).</p><p>Направляющий вектор прямой AB: $\vec{AB} = (4-3; -1-(-2); 2-4) = (1; 1; -2)$.</p><p>Направляющий вектор прямой CD: $\vec{CD} = (7-6; -3-(-3); 1-2) = (1; 0; -1)$.</p><p>Вычислим скалярное произведение векторов:</p><p>$\vec{AB} \cdot \vec{CD} = 1 \cdot 1 + 1 \cdot 0 + (-2) \cdot (-1) = 1 + 0 + 2 = 3$.</p><p>Найдем длины (модули) векторов:</p><p>$|\vec{AB}| = \sqrt{1^2 + 1^2 + (-2)^2} = \sqrt{1+1+4} = \sqrt{6}$.</p><p>$|\vec{CD}| = \sqrt{1^2 + 0^2 + (-1)^2} = \sqrt{1+0+1} = \sqrt{2}$.</p><p>Теперь найдем косинус угла между прямыми:</p><p>$\cos \phi = \frac{|3|}{\sqrt{6} \cdot \sqrt{2}} = \frac{3}{\sqrt{12}} = \frac{3}{2\sqrt{3}} = \frac{3\sqrt{3}}{2 \cdot 3} = \frac{\sqrt{3}}{2}$.</p><p>Угол $\phi$ равен:</p><p>$\phi = \arccos\left(\frac{\sqrt{3}}{2}\right) = 30^\circ$.</p><p>Ответ: $30^\circ$.</p><strong>б)</strong><p>Найдем направляющие векторы прямых AB и CD для точек A(5; -8; -1), B(6; -8; -2), C(7; -5; -11), D(7; -7; -9).</p><p>Направляющий вектор прямой AB: $\vec{AB} = (6-5; -8-(-8); -2-(-1)) = (1; 0; -1)$.</p><p>Направляющий вектор прямой CD: $\vec{CD} = (7-7; -7-(-5); -9-(-11)) = (0; -2; 2)$.</p><p>Вычислим скалярное произведение векторов:</p><p>$\vec{AB} \cdot \vec{CD} = 1 \cdot 0 + 0 \cdot (-2) + (-1) \cdot 2 = 0 + 0 - 2 = -2$.</p><p>Найдем длины векторов:</p><p>$|\vec{AB}| = \sqrt{1^2 + 0^2 + (-1)^2} = \sqrt{1+0+1} = \sqrt{2}$.</p><p>$|\vec{CD}| = \sqrt{0^2 + (-2)^2 + 2^2} = \sqrt{0+4+4} = \sqrt{8} = 2\sqrt{2}$.</p><p>Найдем косинус угла между прямыми:</p><p>$\cos \phi = \frac{|-2|}{\sqrt{2} \cdot 2\sqrt{2}} = \frac{2}{2 \cdot 2} = \frac{2}{4} = \frac{1}{2}$.</p><p>Угол $\phi$ равен:</p><p>$\phi = \arccos\left(\frac{1}{2}\right) = 60^\circ$.</p><p>Ответ: $60^\circ$.</p><strong>в)</strong><p>Найдем направляющие векторы прямых AB и CD для точек A(1; 0; 2), B(2; 1; 0), C(0; -2; -4), D(-2; -4; 0).</p><p>Направляющий вектор прямой AB: $\vec{AB} = (2-1; 1-0; 0-2) = (1; 1; -2)$.</p><p>Направляющий вектор прямой CD: $\vec{CD} = (-2-0; -4-(-2); 0-(-4)) = (-2; -2; 4)$.</p><p>Заметим, что векторы коллинеарны, так как $\vec{CD} = -2 \cdot \vec{AB}$. Это означает, что прямые AB и CD параллельны, и угол между ними равен $0^\circ$.</p><p>Проверим это с помощью формулы. Вычислим скалярное произведение:</p><p>$\vec{AB} \cdot \vec{CD} = 1 \cdot (-2) + 1 \cdot (-2) + (-2) \cdot 4 = -2 - 2 - 8 = -12$.</p><p>Найдем длины векторов:</p><p>$|\vec{AB}| = \sqrt{1^2 + 1^2 + (-2)^2} = \sqrt{1+1+4} = \sqrt{6}$.</p><p>$|\vec{CD}| = \sqrt{(-2)^2 + (-2)^2 + 4^2} = \sqrt{4+4+16} = \sqrt{24} = 2\sqrt{6}$.</p><p>Найдем косинус угла:</p><p>$\cos \phi = \frac{|-12|}{\sqrt{6} \cdot 2\sqrt{6}} = \frac{12}{2 \cdot 6} = \frac{12}{12} = 1$.</p><p>Угол $\phi$ равен:</p><p>$\phi = \arccos(1) = 0^\circ$.</p><p>Ответ: $0^\circ$.</p><strong>г)</strong><p>Найдем направляющие векторы прямых AB и CD для точек A(-6; -15; 7), B(-7; -15; 8), C(14; -10; 9), D(14; -10; 7).</p><p>Направляющий вектор прямой AB: $\vec{AB} = (-7-(-6); -15-(-15); 8-7) = (-1; 0; 1)$.</p><p>Направляющий вектор прямой CD: $\vec{CD} = (14-14; -10-(-10); 7-9) = (0; 0; -2)$.</p><p>Вычислим скалярное произведение векторов:</p><p>$\vec{AB} \cdot \vec{CD} = (-1) \cdot 0 + 0 \cdot 0 + 1 \cdot (-2) = 0 + 0 - 2 = -2$.</p><p>Найдем длины векторов:</p><p>$|\vec{AB}| = \sqrt{(-1)^2 + 0^2 + 1^2} = \sqrt{1+0+1} = \sqrt{2}$.</p><p>$|\vec{CD}| = \sqrt{0^2 + 0^2 + (-2)^2} = \sqrt{0+0+4} = \sqrt{4} = 2$.</p><p>Найдем косинус угла между прямыми:</p><p>$\cos \phi = \frac{|-2|}{\sqrt{2} \cdot 2} = \frac{2}{2\sqrt{2}} = \frac{1}{\sqrt{2}} = \frac{\sqrt{2}}{2}$.</p><p>Угол $\phi$ равен:</p><p>$\phi = \arccos\left(\frac{\sqrt{2}}{2}\right) = 45^\circ$.</p><p>Ответ: $45^\circ$.</p>" ] #original: array:6 [ "id" => 1352433 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1227} "task" => array:2 [ "refs" => "745120" "type" => "task" ] "text" => "<p>Угол $\phi$ между двумя прямыми в пространстве определяется как острый угол между их направляющими векторами $\vec{u}$ и $\vec{v}$. Косинус этого угла вычисляется по формуле:</p><p>$\cos \phi = \frac{|\vec{u} \cdot \vec{v}|}{|\vec{u}| \cdot |\vec{v}|}$</p><p>где $\vec{u} \cdot \vec{v}$ - скалярное произведение векторов, а $|\vec{u}|$ и $|\vec{v}|$ - их длины (модули). Направляющий вектор прямой, проходящей через точки $M_1(x_1, y_1, z_1)$ и $M_2(x_2, y_2, z_2)$, находится как $\vec{M_1M_2} = (x_2-x_1, y_2-y_1, z_2-z_1)$.</p><strong>а)</strong><p>Найдем направляющие векторы прямых AB и CD для точек A(3; -2; 4), B(4; -1; 2), C(6; -3; 2), D(7; -3; 1).</p><p>Направляющий вектор прямой AB: $\vec{AB} = (4-3; -1-(-2); 2-4) = (1; 1; -2)$.</p><p>Направляющий вектор прямой CD: $\vec{CD} = (7-6; -3-(-3); 1-2) = (1; 0; -1)$.</p><p>Вычислим скалярное произведение векторов:</p><p>$\vec{AB} \cdot \vec{CD} = 1 \cdot 1 + 1 \cdot 0 + (-2) \cdot (-1) = 1 + 0 + 2 = 3$.</p><p>Найдем длины (модули) векторов:</p><p>$|\vec{AB}| = \sqrt{1^2 + 1^2 + (-2)^2} = \sqrt{1+1+4} = \sqrt{6}$.</p><p>$|\vec{CD}| = \sqrt{1^2 + 0^2 + (-1)^2} = \sqrt{1+0+1} = \sqrt{2}$.</p><p>Теперь найдем косинус угла между прямыми:</p><p>$\cos \phi = \frac{|3|}{\sqrt{6} \cdot \sqrt{2}} = \frac{3}{\sqrt{12}} = \frac{3}{2\sqrt{3}} = \frac{3\sqrt{3}}{2 \cdot 3} = \frac{\sqrt{3}}{2}$.</p><p>Угол $\phi$ равен:</p><p>$\phi = \arccos\left(\frac{\sqrt{3}}{2}\right) = 30^\circ$.</p><p>Ответ: $30^\circ$.</p><strong>б)</strong><p>Найдем направляющие векторы прямых AB и CD для точек A(5; -8; -1), B(6; -8; -2), C(7; -5; -11), D(7; -7; -9).</p><p>Направляющий вектор прямой AB: $\vec{AB} = (6-5; -8-(-8); -2-(-1)) = (1; 0; -1)$.</p><p>Направляющий вектор прямой CD: $\vec{CD} = (7-7; -7-(-5); -9-(-11)) = (0; -2; 2)$.</p><p>Вычислим скалярное произведение векторов:</p><p>$\vec{AB} \cdot \vec{CD} = 1 \cdot 0 + 0 \cdot (-2) + (-1) \cdot 2 = 0 + 0 - 2 = -2$.</p><p>Найдем длины векторов:</p><p>$|\vec{AB}| = \sqrt{1^2 + 0^2 + (-1)^2} = \sqrt{1+0+1} = \sqrt{2}$.</p><p>$|\vec{CD}| = \sqrt{0^2 + (-2)^2 + 2^2} = \sqrt{0+4+4} = \sqrt{8} = 2\sqrt{2}$.</p><p>Найдем косинус угла между прямыми:</p><p>$\cos \phi = \frac{|-2|}{\sqrt{2} \cdot 2\sqrt{2}} = \frac{2}{2 \cdot 2} = \frac{2}{4} = \frac{1}{2}$.</p><p>Угол $\phi$ равен:</p><p>$\phi = \arccos\left(\frac{1}{2}\right) = 60^\circ$.</p><p>Ответ: $60^\circ$.</p><strong>в)</strong><p>Найдем направляющие векторы прямых AB и CD для точек A(1; 0; 2), B(2; 1; 0), C(0; -2; -4), D(-2; -4; 0).</p><p>Направляющий вектор прямой AB: $\vec{AB} = (2-1; 1-0; 0-2) = (1; 1; -2)$.</p><p>Направляющий вектор прямой CD: $\vec{CD} = (-2-0; -4-(-2); 0-(-4)) = (-2; -2; 4)$.</p><p>Заметим, что векторы коллинеарны, так как $\vec{CD} = -2 \cdot \vec{AB}$. Это означает, что прямые AB и CD параллельны, и угол между ними равен $0^\circ$.</p><p>Проверим это с помощью формулы. Вычислим скалярное произведение:</p><p>$\vec{AB} \cdot \vec{CD} = 1 \cdot (-2) + 1 \cdot (-2) + (-2) \cdot 4 = -2 - 2 - 8 = -12$.</p><p>Найдем длины векторов:</p><p>$|\vec{AB}| = \sqrt{1^2 + 1^2 + (-2)^2} = \sqrt{1+1+4} = \sqrt{6}$.</p><p>$|\vec{CD}| = \sqrt{(-2)^2 + (-2)^2 + 4^2} = \sqrt{4+4+16} = \sqrt{24} = 2\sqrt{6}$.</p><p>Найдем косинус угла:</p><p>$\cos \phi = \frac{|-12|}{\sqrt{6} \cdot 2\sqrt{6}} = \frac{12}{2 \cdot 6} = \frac{12}{12} = 1$.</p><p>Угол $\phi$ равен:</p><p>$\phi = \arccos(1) = 0^\circ$.</p><p>Ответ: $0^\circ$.</p><strong>г)</strong><p>Найдем направляющие векторы прямых AB и CD для точек A(-6; -15; 7), B(-7; -15; 8), C(14; -10; 9), D(14; -10; 7).</p><p>Направляющий вектор прямой AB: $\vec{AB} = (-7-(-6); -15-(-15); 8-7) = (-1; 0; 1)$.</p><p>Направляющий вектор прямой CD: $\vec{CD} = (14-14; -10-(-10); 7-9) = (0; 0; -2)$.</p><p>Вычислим скалярное произведение векторов:</p><p>$\vec{AB} \cdot \vec{CD} = (-1) \cdot 0 + 0 \cdot 0 + 1 \cdot (-2) = 0 + 0 - 2 = -2$.</p><p>Найдем длины векторов:</p><p>$|\vec{AB}| = \sqrt{(-1)^2 + 0^2 + 1^2} = \sqrt{1+0+1} = \sqrt{2}$.</p><p>$|\vec{CD}| = \sqrt{0^2 + 0^2 + (-2)^2} = \sqrt{0+0+4} = \sqrt{4} = 2$.</p><p>Найдем косинус угла между прямыми:</p><p>$\cos \phi = \frac{|-2|}{\sqrt{2} \cdot 2} = \frac{2}{2\sqrt{2}} = \frac{1}{\sqrt{2}} = \frac{\sqrt{2}}{2}$.</p><p>Угол $\phi$ равен:</p><p>$\phi = \arccos\left(\frac{\sqrt{2}}{2}\right) = 45^\circ$.</p><p>Ответ: $45^\circ$.</p>" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "745121" "type" => "task" ] "previous" => array:2 [ "refs" => "745119" "type" => "task" ] "book" => Illuminate\Database\Eloquent\Collection {#1251 #items: array:1 [ 0 => App\Models\Book {#1176 #connection: "mysql" #table: "books" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:50 [ "id" => 36 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1165 #items: array:1 [ 0 => App\Models\Term {#1166 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ …10] #original: array:10 [ …10] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_class" => Illuminate\Database\Eloquent\Collection {#1175 #items: array:2 [ 0 => App\Models\Term {#1174 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } 1 => App\Models\Term {#1172 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_publisher" => Illuminate\Database\Eloquent\Collection {#1171 #items: array:1 [ 0 => App\Models\Term {#1173 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_author" => Illuminate\Database\Eloquent\Collection {#1169 #items: array:5 [ 0 => App\Models\Term {#1167 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ …12] #original: array:12 [ …12] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } 1 => App\Models\Term {#1170 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ …12] #original: array:12 [ …12] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } 2 => App\Models\Term {#1168 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ …12] #original: array:12 [ …12] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } 3 => App\Models\Term {#1225 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ …12] #original: array:12 [ …12] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } 4 => App\Models\Term {#1226 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ …12] #original: array:12 [ …12] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1228 #items: [] #escapeWhenCastingToString: false } "field_book_type" => Illuminate\Database\Eloquent\Collection {#1229 #items: array:1 [ 0 => App\Models\Term {#1230 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ …10] #original: array:10 [ …10] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_country" => Illuminate\Database\Eloquent\Collection {#1231 #items: array:1 [ 0 => App\Models\Term {#1232 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_city" => Illuminate\Database\Eloquent\Collection {#1233 #items: array:1 [ 0 => App\Models\Term {#1234 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_series" => Illuminate\Database\Eloquent\Collection {#1235 #items: [] #escapeWhenCastingToString: false } "field_umk" => Illuminate\Database\Eloquent\Collection {#1236 #items: [] #escapeWhenCastingToString: false } "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1237 #items: array:1 [ 0 => App\Models\Term {#1238 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1239 #items: array:1 [ 0 => App\Models\Term {#1240 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ …10] #original: array:10 [ …10] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_publication_number" => "11" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1241 #items: array:1 [ 0 => App\Models\Term {#1242 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1243 #items: [] #escapeWhenCastingToString: false } "field_under_the_edition_degree" => null "field_cover_description" => "с ромбами" "field_publication_year" => "2019" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => "Учебник для общеобразовательных организаций" "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => "Математика: алгебра и начала математического анализа, геометрия" "field_link_to_source" => null "field_tasks_count" => "1147" "field_priority" => "12" "field_default_folder" => "/geometrija_10/atanasjan-u23/" "field_isbn" => "978-5-09-103606-0 (2023)" "field_cover" => array:1 [ 0 => "/media/geometrija_10/atanasjan-u23/covers/cover1.webp?ts=1739363242" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/geometrija_10/atanasjan-u23/covers/cover1.webp?ts=1739363242" "alt" => "" "width" => "1200" "height" => "1661" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1244 #items: [] #escapeWhenCastingToString: false } "field_new_book" => Illuminate\Database\Eloquent\Collection {#1245 #items: [] #escapeWhenCastingToString: false } "field_old_book" => Illuminate\Database\Eloquent\Collection {#1246 #items: [] #escapeWhenCastingToString: false } "field_url" => "/10-klass/geometrija/atanasjan-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1247 #items: array:1 [ 0 => App\Models\Term {#1248 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ "class" => 381 "subject" => 543 "class_subject" => 392 ] ] #original: array:50 [ "id" => 36 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1165} "field_class" => Illuminate\Database\Eloquent\Collection {#1175} "field_publisher" => Illuminate\Database\Eloquent\Collection {#1171} "field_author" => Illuminate\Database\Eloquent\Collection {#1169} "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1228} "field_book_type" => Illuminate\Database\Eloquent\Collection {#1229} "field_country" => Illuminate\Database\Eloquent\Collection {#1231} "field_city" => Illuminate\Database\Eloquent\Collection {#1233} "field_series" => Illuminate\Database\Eloquent\Collection {#1235} "field_umk" => Illuminate\Database\Eloquent\Collection {#1236} "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1237} "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1239} "field_publication_number" => "11" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1241} "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1243} "field_under_the_edition_degree" => null "field_cover_description" => "с ромбами" "field_publication_year" => "2019" "field_publication_year_until" => null "field_part" => "" "field_part_writing" => "" "field_second_foreign_language" => null "field_for_whom" => "Учебник для общеобразовательных организаций" "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => "Математика: алгебра и начала математического анализа, геометрия" "field_link_to_source" => null "field_tasks_count" => "1147" "field_priority" => "12" "field_default_folder" => "/geometrija_10/atanasjan-u23/" "field_isbn" => "978-5-09-103606-0 (2023)" "field_cover" => array:1 [ 0 => "/media/geometrija_10/atanasjan-u23/covers/cover1.webp?ts=1739363242" ] "field_cover_alts" => array:1 [ 0 => "" ] "field_covers" => array:1 [ 0 => array:4 [ "path" => "/media/geometrija_10/atanasjan-u23/covers/cover1.webp?ts=1739363242" "alt" => "" "width" => "1200" "height" => "1661" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1244} "field_new_book" => Illuminate\Database\Eloquent\Collection {#1245} "field_old_book" => Illuminate\Database\Eloquent\Collection {#1246} "field_url" => "/10-klass/geometrija/atanasjan-uchebnik" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1247} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "breadcrumbs" => array:3 [ "class" => 381 "subject" => 543 "class_subject" => 392 ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "page" => Illuminate\Database\Eloquent\Collection {#1256 #items: array:1 [ 0 => App\Models\BookPage {#1255 #connection: "mysql" #table: "book_pages" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 933960 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "178" "field_url" => "/10-klass/geometrija/atanasjan-uchebnik/page-178" "field_display_title" => "178" "field_folder" => "1" "field_image_name" => "178" "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1257 #items: [] #escapeWhenCastingToString: false } "field_weight" => "0" "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1258 #items: array:1 [ 0 => App\Models\Book {#1176} ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "edition_groups" => Illuminate\Database\Eloquent\Collection {#1259 #items: [] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1269 #items: array:1 [ 0 => App\Models\Element {#1268 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ …6] #original: array:6 [ …6] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "933961" "type" => "book_page" ] "previous" => array:2 [ "refs" => "933959" "type" => "book_page" ] "tasks" => Illuminate\Database\Eloquent\Collection {#1481 #items: array:3 [ 0 => App\Models\Task {#1491 #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ …24] #original: array:24 [ …24] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } 1 => App\Models\Task {#1498 #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ …24] #original: array:24 [ …24] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } 2 => App\Models\Task {#1505 #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ …24] #original: array:24 [ …24] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } ] #original: array:21 [ "id" => 933960 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "178" "field_url" => "/10-klass/geometrija/atanasjan-uchebnik/page-178" "field_display_title" => "178" "field_folder" => "1" "field_image_name" => "178" "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1257} "field_weight" => "0" "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1258} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "edition_groups" => Illuminate\Database\Eloquent\Collection {#1259} "content" => Illuminate\Database\Eloquent\Collection {#1269} "next" => array:2 [ "refs" => "933961" "type" => "book_page" ] "previous" => array:2 [ "refs" => "933959" "type" => "book_page" ] "tasks" => Illuminate\Database\Eloquent\Collection {#1481} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } ] #original: array:24 [ "id" => 745120 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "178" "field_page_end" => null "field_url" => "/10-klass/geometrija/atanasjan-uchebnik/00-705" "field_display_title" => "705" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1037} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1035} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1079} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1163} "content" => Illuminate\Database\Eloquent\Collection {#1164} "next" => array:2 [ "refs" => "745121" "type" => "task" ] "previous" => array:2 [ "refs" => "745119" "type" => "task" ] "book" => Illuminate\Database\Eloquent\Collection {#1251} "page" => array:2 [ "refs" => "933960" "type" => "book_page" ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] }
№705 (с. 178)
Условие. №705 (с. 178)
скриншот условия
705. Вычислите угол между прямыми AB и CD, если:
Решение 2. №705 (с. 178)
Решение 3. №705 (с. 178)
Решение 4. №705 (с. 178)
Решение 5. №705 (с. 178)
Решение 6. №705 (с. 178)
Угол $\phi$ между двумя прямыми в пространстве определяется как острый угол между их направляющими векторами $\vec{u}$ и $\vec{v}$. Косинус этого угла вычисляется по формуле:
$\cos \phi = \frac{|\vec{u} \cdot \vec{v}|}{|\vec{u}| \cdot |\vec{v}|}$
где $\vec{u} \cdot \vec{v}$ - скалярное произведение векторов, а $|\vec{u}|$ и $|\vec{v}|$ - их длины (модули). Направляющий вектор прямой, проходящей через точки $M_1(x_1, y_1, z_1)$ и $M_2(x_2, y_2, z_2)$, находится как $\vec{M_1M_2} = (x_2-x_1, y_2-y_1, z_2-z_1)$.
а)Найдем направляющие векторы прямых AB и CD для точек A(3; -2; 4), B(4; -1; 2), C(6; -3; 2), D(7; -3; 1).
Направляющий вектор прямой AB: $\vec{AB} = (4-3; -1-(-2); 2-4) = (1; 1; -2)$.
Направляющий вектор прямой CD: $\vec{CD} = (7-6; -3-(-3); 1-2) = (1; 0; -1)$.
Вычислим скалярное произведение векторов:
$\vec{AB} \cdot \vec{CD} = 1 \cdot 1 + 1 \cdot 0 + (-2) \cdot (-1) = 1 + 0 + 2 = 3$.
Найдем длины (модули) векторов:
$|\vec{AB}| = \sqrt{1^2 + 1^2 + (-2)^2} = \sqrt{1+1+4} = \sqrt{6}$.
$|\vec{CD}| = \sqrt{1^2 + 0^2 + (-1)^2} = \sqrt{1+0+1} = \sqrt{2}$.
Теперь найдем косинус угла между прямыми:
$\cos \phi = \frac{|3|}{\sqrt{6} \cdot \sqrt{2}} = \frac{3}{\sqrt{12}} = \frac{3}{2\sqrt{3}} = \frac{3\sqrt{3}}{2 \cdot 3} = \frac{\sqrt{3}}{2}$.
Угол $\phi$ равен:
$\phi = \arccos\left(\frac{\sqrt{3}}{2}\right) = 30^\circ$.
Ответ: $30^\circ$.
б)Найдем направляющие векторы прямых AB и CD для точек A(5; -8; -1), B(6; -8; -2), C(7; -5; -11), D(7; -7; -9).
Направляющий вектор прямой AB: $\vec{AB} = (6-5; -8-(-8); -2-(-1)) = (1; 0; -1)$.
Направляющий вектор прямой CD: $\vec{CD} = (7-7; -7-(-5); -9-(-11)) = (0; -2; 2)$.
Вычислим скалярное произведение векторов:
$\vec{AB} \cdot \vec{CD} = 1 \cdot 0 + 0 \cdot (-2) + (-1) \cdot 2 = 0 + 0 - 2 = -2$.
Найдем длины векторов:
$|\vec{AB}| = \sqrt{1^2 + 0^2 + (-1)^2} = \sqrt{1+0+1} = \sqrt{2}$.
$|\vec{CD}| = \sqrt{0^2 + (-2)^2 + 2^2} = \sqrt{0+4+4} = \sqrt{8} = 2\sqrt{2}$.
Найдем косинус угла между прямыми:
$\cos \phi = \frac{|-2|}{\sqrt{2} \cdot 2\sqrt{2}} = \frac{2}{2 \cdot 2} = \frac{2}{4} = \frac{1}{2}$.
Угол $\phi$ равен:
$\phi = \arccos\left(\frac{1}{2}\right) = 60^\circ$.
Ответ: $60^\circ$.
в)Найдем направляющие векторы прямых AB и CD для точек A(1; 0; 2), B(2; 1; 0), C(0; -2; -4), D(-2; -4; 0).
Направляющий вектор прямой AB: $\vec{AB} = (2-1; 1-0; 0-2) = (1; 1; -2)$.
Направляющий вектор прямой CD: $\vec{CD} = (-2-0; -4-(-2); 0-(-4)) = (-2; -2; 4)$.
Заметим, что векторы коллинеарны, так как $\vec{CD} = -2 \cdot \vec{AB}$. Это означает, что прямые AB и CD параллельны, и угол между ними равен $0^\circ$.
Проверим это с помощью формулы. Вычислим скалярное произведение:
$\vec{AB} \cdot \vec{CD} = 1 \cdot (-2) + 1 \cdot (-2) + (-2) \cdot 4 = -2 - 2 - 8 = -12$.
Найдем длины векторов:
$|\vec{AB}| = \sqrt{1^2 + 1^2 + (-2)^2} = \sqrt{1+1+4} = \sqrt{6}$.
$|\vec{CD}| = \sqrt{(-2)^2 + (-2)^2 + 4^2} = \sqrt{4+4+16} = \sqrt{24} = 2\sqrt{6}$.
Найдем косинус угла:
$\cos \phi = \frac{|-12|}{\sqrt{6} \cdot 2\sqrt{6}} = \frac{12}{2 \cdot 6} = \frac{12}{12} = 1$.
Угол $\phi$ равен:
$\phi = \arccos(1) = 0^\circ$.
Ответ: $0^\circ$.
г)Найдем направляющие векторы прямых AB и CD для точек A(-6; -15; 7), B(-7; -15; 8), C(14; -10; 9), D(14; -10; 7).
Направляющий вектор прямой AB: $\vec{AB} = (-7-(-6); -15-(-15); 8-7) = (-1; 0; 1)$.
Направляющий вектор прямой CD: $\vec{CD} = (14-14; -10-(-10); 7-9) = (0; 0; -2)$.
Вычислим скалярное произведение векторов:
$\vec{AB} \cdot \vec{CD} = (-1) \cdot 0 + 0 \cdot 0 + 1 \cdot (-2) = 0 + 0 - 2 = -2$.
Найдем длины векторов:
$|\vec{AB}| = \sqrt{(-1)^2 + 0^2 + 1^2} = \sqrt{1+0+1} = \sqrt{2}$.
$|\vec{CD}| = \sqrt{0^2 + 0^2 + (-2)^2} = \sqrt{0+0+4} = \sqrt{4} = 2$.
Найдем косинус угла между прямыми:
$\cos \phi = \frac{|-2|}{\sqrt{2} \cdot 2} = \frac{2}{2\sqrt{2}} = \frac{1}{\sqrt{2}} = \frac{\sqrt{2}}{2}$.
Угол $\phi$ равен:
$\phi = \arccos\left(\frac{\sqrt{2}}{2}\right) = 45^\circ$.
Ответ: $45^\circ$.
Другие задания:
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