Номер 56, страница 46 - гдз по геометрии 10 класс рабочая тетрадь Глазков, Юдина

Геометрия, 10 класс рабочая тетрадь, авторы: Глазков Юрий Александрович, Юдина Ирина Игоревна, Бутузов Валентин Фёдорович, издательство Просвещение, Москва, 2020, коричневого цвета

Авторы: Глазков Ю. А., Юдина И. И., Бутузов В. Ф.

Тип: рабочая тетрадь

Серия: мгу - школе

Издательство: Просвещение

Год издания: 2020 - 2026

Уровень обучения: базовый и углублённый

Цвет обложки: коричневый в сеточку

ISBN: 978-5-09-097573-5

2.2. Перпендикуляр и наклонные. Угол между прямой и плоскостью - номер 56, страница 46.

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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Россия"
                            "field_cases" => array:6 [
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                              "field_nominative_case" => null
                              "field_prepositional_case" => null
                            ]
                            "field_translit" => "rossiya"
                          ]
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                          #attributeCastCache: []
                          #dateFormat: null
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                          #dispatchesEvents: []
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                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1064
                      #items: array:1 [
                        0 => App\Models\Term {#1065
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
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                          #with: []
                          #withCount: []
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                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 15
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Москва"
                            "field_cases" => array:6 [
                              "field_accusative_case" => null
                              "field_creative_case" => null
                              "field_dative_case" => null
                              "field_genitive_case" => null
                              "field_nominative_case" => null
                              "field_prepositional_case" => null
                            ]
                            "field_translit" => "moskva"
                          ]
                          #original: array:6 [
                            "id" => 15
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Москва"
                            "field_cases" => array:6 [
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                              "field_dative_case" => null
                              "field_genitive_case" => null
                              "field_nominative_case" => null
                              "field_prepositional_case" => null
                            ]
                            "field_translit" => "moskva"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
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                          #relations: []
                          #touches: []
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                          #hidden: []
                          #visible: []
                          #fillable: []
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                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1066
                      #items: array:1 [
                        0 => App\Models\Term {#1067
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:8 [
                            "id" => 4728
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "мгу - школе"
                            "field_cases" => null
                            "field_foreign_lang_series" => null
                            "field_transcription_eng" => null
                            "field_translit" => "mgu - shkole"
                          ]
                          #original: array:8 [
                            "id" => 4728
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "мгу - школе"
                            "field_cases" => null
                            "field_foreign_lang_series" => null
                            "field_transcription_eng" => null
                            "field_translit" => "mgu - shkole"
                          ]
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                          #touches: []
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                          #hidden: []
                          #visible: []
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                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1068
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1069
                      #items: array:1 [
                        0 => App\Models\Term {#1070
                          #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" => 41
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "базовый и углублённый"
                            "field_cases" => array:6 [
                              "field_accusative_case" => "базовый и углубленный"
                              "field_creative_case" => "базовым и углубленным"
                              "field_dative_case" => "базовому и углубленному"
                              "field_genitive_case" => "базового и углубленного"
                              "field_nominative_case" => "базовый и углубленный"
                              "field_prepositional_case" => "базовом и углубленном"
                            ]
                            "field_translit" => "bazovyy i uglublennyy"
                          ]
                          #original: array:6 [
                            "id" => 41
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "базовый и углублённый"
                            "field_cases" => array:6 [
                              "field_accusative_case" => "базовый и углубленный"
                              "field_creative_case" => "базовым и углубленным"
                              "field_dative_case" => "базовому и углубленному"
                              "field_genitive_case" => "базового и углубленного"
                              "field_nominative_case" => "базовый и углубленный"
                              "field_prepositional_case" => "базовом и углубленном"
                            ]
                            "field_translit" => "bazovyy i uglublennyy"
                          ]
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                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
                          #observables: []
                          #relations: []
                          #touches: []
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                          +usesUniqueIds: false
                          #hidden: []
                          #visible: []
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                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1071
                      #items: array:1 [
                        0 => App\Models\Term {#1072
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
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                          +exists: true
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                          #escapeWhenCastingToString: false
                          #attributes: array:10 [
                            "id" => 6706
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "ФГОС (старый)"
                            "field_cases" => array:6 [
                              "field_accusative_case" => null
                              "field_creative_case" => null
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                              "field_nominative_case" => null
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                            ]
                            "field_color" => null
                            "field_end_year" => "2022"
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                            "field_translit" => "fgos-old"
                            "field_type" => null
                          ]
                          #original: array:10 [
                            "id" => 6706
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
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                            ]
                            "field_color" => null
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                            "field_translit" => "fgos-old"
                            "field_type" => null
                          ]
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                          #touches: []
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                            0 => "*"
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                        }
                      ]
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                    }
                    "field_publication_number" => "4"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1073
                      #items: array:1 [
                        0 => App\Models\Term {#1074
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
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                          #perPage: 15
                          +exists: true
                          +wasRecentlyCreated: false
                          #escapeWhenCastingToString: false
                          #attributes: array:6 [
                            "id" => 33
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "стереотипное"
                            "field_cases" => array:6 [
                              "field_accusative_case" => null
                              "field_creative_case" => null
                              "field_dative_case" => null
                              "field_genitive_case" => null
                              "field_nominative_case" => null
                              "field_prepositional_case" => null
                            ]
                            "field_translit" => "stereotipnoe"
                          ]
                          #original: array:6 [
                            "id" => 33
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "стереотипное"
                            "field_cases" => array:6 [
                              "field_accusative_case" => null
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                              "field_dative_case" => null
                              "field_genitive_case" => null
                              "field_nominative_case" => null
                              "field_prepositional_case" => null
                            ]
                            "field_translit" => "stereotipnoe"
                          ]
                          #changes: []
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                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
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                          #relations: []
                          #touches: []
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                          #hidden: []
                          #visible: []
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                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1075
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_under_the_edition_degree" => null
                    "field_cover_description" => "в сеточку"
                    "field_publication_year" => "2020"
                    "field_publication_year_until" => null
                    "field_part" => ""
                    "field_part_writing" => ""
                    "field_second_foreign_language" => null
                    "field_for_whom" => "Учебное пособие"
                    "field_allowed" => null
                    "field_reserve_field" => null
                    "field_link_to_source" => null
                    "field_tasks_count" => "110"
                    "field_priority" => "14"
                    "field_default_folder" => "/geometrija_10/glazkov-rt/"
                    "field_isbn" => "978-5-09-097573-5"
                    "field_cover" => array:1 [
                      0 => "/media/geometrija_10/glazkov-rt/covers/cover1.webp?ts=1739295144"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/geometrija_10/glazkov-rt/covers/cover1.webp?ts=1739295144"
                        "alt" => ""
                        "width" => "1200"
                        "height" => "1661"
                      ]
                    ]
                    "field_popular_book" => null
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1076
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1077
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1078
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_url" => "/10-klass/geometrija/glazkov-tetrad"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1079
                      #items: array:1 [
                        0 => App\Models\Term {#1080
                          #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" => 51
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "коричневый"
                            "field_cases" => array:6 [
                              "field_accusative_case" => "коричневый"
                              "field_creative_case" => "коричневым"
                              "field_dative_case" => "коричневому"
                              "field_genitive_case" => "коричневого"
                              "field_nominative_case" => "коричневый"
                              "field_prepositional_case" => "коричневом"
                            ]
                            "field_translit" => "korichnevyy"
                          ]
                          #original: array:6 [
                            "id" => 51
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "коричневый"
                            "field_cases" => array:6 [
                              "field_accusative_case" => "коричневый"
                              "field_creative_case" => "коричневым"
                              "field_dative_case" => "коричневому"
                              "field_genitive_case" => "коричневого"
                              "field_nominative_case" => "коричневый"
                              "field_prepositional_case" => "коричневом"
                            ]
                            "field_translit" => "korichnevyy"
                          ]
                          #changes: []
                          #casts: []
                          #classCastCache: []
                          #attributeCastCache: []
                          #dateFormat: null
                          #appends: []
                          #dispatchesEvents: []
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                          #relations: []
                          #touches: []
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                          #hidden: []
                          #visible: []
                          #fillable: []
                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                      ]
                      #escapeWhenCastingToString: false
                    }
                    "field_metatags_title" => null
                    "field_metatags_description" => null
                    "field_h1" => null
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                    "field_description_bottom" => null
                    "breadcrumbs" => array:3 [
                      "class" => 381
                      "subject" => 543
                      "class_subject" => 392
                    ]
                  ]
                  #original: array:50 [
                    "id" => 261
                    "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 {#1050}
                    "field_class" => Illuminate\Database\Eloquent\Collection {#1051}
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1053}
                    "field_author" => Illuminate\Database\Eloquent\Collection {#1055}
                    "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1059}
                    "field_book_type" => Illuminate\Database\Eloquent\Collection {#1060}
                    "field_country" => Illuminate\Database\Eloquent\Collection {#1062}
                    "field_city" => Illuminate\Database\Eloquent\Collection {#1064}
                    "field_series" => Illuminate\Database\Eloquent\Collection {#1066}
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1068}
                    "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1069}
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1071}
                    "field_publication_number" => "4"
                    "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1073}
                    "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1075}
                    "field_under_the_edition_degree" => null
                    "field_cover_description" => "в сеточку"
                    "field_publication_year" => "2020"
                    "field_publication_year_until" => null
                    "field_part" => ""
                    "field_part_writing" => ""
                    "field_second_foreign_language" => null
                    "field_for_whom" => "Учебное пособие"
                    "field_allowed" => null
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                    "field_link_to_source" => null
                    "field_tasks_count" => "110"
                    "field_priority" => "14"
                    "field_default_folder" => "/geometrija_10/glazkov-rt/"
                    "field_isbn" => "978-5-09-097573-5"
                    "field_cover" => array:1 [
                      0 => "/media/geometrija_10/glazkov-rt/covers/cover1.webp?ts=1739295144"
                    ]
                    "field_cover_alts" => array:1 [
                      0 => ""
                    ]
                    "field_covers" => array:1 [
                      0 => array:4 [
                        "path" => "/media/geometrija_10/glazkov-rt/covers/cover1.webp?ts=1739295144"
                        "alt" => ""
                        "width" => "1200"
                        "height" => "1661"
                      ]
                    ]
                    "field_popular_book" => null
                    "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1076}
                    "field_new_book" => Illuminate\Database\Eloquent\Collection {#1077}
                    "field_old_book" => Illuminate\Database\Eloquent\Collection {#1078}
                    "field_url" => "/10-klass/geometrija/glazkov-tetrad"
                    "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1079}
                    "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: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [
                    0 => "*"
                  ]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1081
              #items: []
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:24 [
            "id" => 738458
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "2.2. Перпендикуляр и наклонные. Угол между прямой и плоскостью"
            "field_branch_order" => null
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1047}
            "field_page_start" => "42"
            "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 {#1083}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1081}
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "parent_branches" => Illuminate\Database\Eloquent\Collection {#1038
      #items: array:1 [
        0 => App\Models\Branch {#1045}
      ]
      #escapeWhenCastingToString: false
    }
    "content" => Illuminate\Database\Eloquent\Collection {#1042
      #items: array:3 [
        0 => App\Models\Element {#1088
          #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" => 937135
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1097
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                0 => App\Models\Edition {#1089
                  #connection: "mysql"
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                    "created_at" => "2026-04-10 13:58:26"
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                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1091
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                          #table: "terms"
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            "task" => array:2 [
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            "text" => "<p><strong>56</strong> Через точку А, удаленную от плоскости $\alpha$ на расстояние $\sqrt{3}$ см, проведена прямая, пересекающая плоскость $\alpha$ в точке В. Найдите угол между прямой $AB$ и плоскостью $\alpha$, если $AB = 2$ см.</p><p><strong>Решение.</strong></p><p>Пусть отрезок $AO$ &mdash; перпендикуляр к плоскости $\alpha$. Тогда $AO = &mdash;$, прямая $OB$ &mdash; проекция прямой $AB$ на плоскость $\alpha$, и угол между прямой $AB$ и плоскостью $\alpha$ равен $\angle ABO$. Из прямоугольного треугольника $AOB$ находим: $\sin \angle ABO = &mdash; = &mdash;$, следовательно, $\angle ABO = &mdash;$.</p><p><strong>Ответ.</strong> &mdash;</p>"
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                "height" => 1060
                "path" => "/media/geometrija_10/glazkov-rt/0-00/56-1.webp?ts=1739375737"
              ]
            ]
          ]
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            "id" => 937135
            "created_at" => "2026-04-10 13:58:26"
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            "edition" => Illuminate\Database\Eloquent\Collection {#1097}
            "task" => array:2 [
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              "type" => "task"
            ]
            "text" => "<p><strong>56</strong> Через точку А, удаленную от плоскости $\alpha$ на расстояние $\sqrt{3}$ см, проведена прямая, пересекающая плоскость $\alpha$ в точке В. Найдите угол между прямой $AB$ и плоскостью $\alpha$, если $AB = 2$ см.</p><p><strong>Решение.</strong></p><p>Пусть отрезок $AO$ &mdash; перпендикуляр к плоскости $\alpha$. Тогда $AO = &mdash;$, прямая $OB$ &mdash; проекция прямой $AB$ на плоскость $\alpha$, и угол между прямой $AB$ и плоскостью $\alpha$ равен $\angle ABO$. Из прямоугольного треугольника $AOB$ находим: $\sin \angle ABO = &mdash; = &mdash;$, следовательно, $\angle ABO = &mdash;$.</p><p><strong>Ответ.</strong> &mdash;</p>"
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        1 => App\Models\Element {#1095
          #connection: "mysql"
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            "edition" => Illuminate\Database\Eloquent\Collection {#1105
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                0 => App\Models\Edition {#1096
                  #connection: "mysql"
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          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
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                          #attributes: array:6 [
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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "name" => "Gemini 2.5 Pro"
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                          #visible: []
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                      #items: []
                      #escapeWhenCastingToString: false
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                    "field_process_formula" => "katex"
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                    "id" => 5337
                    "created_at" => "2026-04-10 13:58:26"
                    "updated_at" => null
                    "title" => "Решение 2"
                    "field_order" => "3"
                    "field_publisher" => Illuminate\Database\Eloquent\Collection {#1107}
                    "field_content_type" => "free"
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                    "field_page_content_text_checked" => "0"
                    "field_solution_author" => "Gemini 2.5 Pro"
                    "field_moderator" => "vadim"
                    "field_edition_type" => "solution"
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                    "field_responsible" => Illuminate\Database\Eloquent\Collection {#1108}
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                  ]
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            "task" => array:2 [
              "refs" => "738527"
              "type" => "task"
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            "text" => "<p> По условию задачи, точка A удалена от плоскости $\alpha$ на расстояние $\sqrt{3}$ см. Это расстояние равно длине перпендикуляра, опущенного из точки A на плоскость $\alpha$. Обозначим основание этого перпендикуляра как точку $O$. Таким образом, длина отрезка $AO$ равна $\sqrt{3}$ см, и $AO \perp \alpha$. </p> <p> Прямая, проходящая через точки $A$ и $B$, является наклонной к плоскости $\alpha$. Отрезок $OB$ является проекцией наклонной $AB$ на плоскость $\alpha$. </p> <p> Углом между прямой и плоскостью называется угол между этой прямой и её проекцией на плоскость. Следовательно, нам нужно найти величину угла $\angle ABO$. </p> <p> Рассмотрим треугольник $AOB$. Так как $AO$ — перпендикуляр к плоскости $\alpha$, то он перпендикулярен любой прямой, лежащей в этой плоскости, в том числе и прямой $OB$. Значит, треугольник $AOB$ является прямоугольным с прямым углом $\angle AOB = 90^\circ$. </p> <p> В прямоугольном треугольнике $AOB$ нам известны: <br> - катет $AO = \sqrt{3}$ см (противолежащий углу $\angle ABO$); <br> - гипотенуза $AB = 2$ см. </p> <p> Синус острого угла в прямоугольном треугольнике равен отношению противолежащего катета к гипотенузе. Для угла $\angle ABO$ имеем: <br> $\sin(\angle ABO) = \frac{AO}{AB}$ </p> <p> Подставим известные значения: <br> $\sin(\angle ABO) = \frac{\sqrt{3}}{2}$ </p> <p> Из этого равенства находим величину угла $\angle ABO$: <br> $\angle ABO = \arcsin\left(\frac{\sqrt{3}}{2}\right) = 60^\circ$. </p> <p> <strong>Ответ:</strong> $60^\circ$. </p>"
          ]
          #original: array:6 [
            "id" => 1434319
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1113}
            "task" => array:2 [
              "refs" => "738527"
              "type" => "task"
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            "text" => "<p> По условию задачи, точка A удалена от плоскости $\alpha$ на расстояние $\sqrt{3}$ см. Это расстояние равно длине перпендикуляра, опущенного из точки A на плоскость $\alpha$. Обозначим основание этого перпендикуляра как точку $O$. Таким образом, длина отрезка $AO$ равна $\sqrt{3}$ см, и $AO \perp \alpha$. </p> <p> Прямая, проходящая через точки $A$ и $B$, является наклонной к плоскости $\alpha$. Отрезок $OB$ является проекцией наклонной $AB$ на плоскость $\alpha$. </p> <p> Углом между прямой и плоскостью называется угол между этой прямой и её проекцией на плоскость. Следовательно, нам нужно найти величину угла $\angle ABO$. </p> <p> Рассмотрим треугольник $AOB$. Так как $AO$ — перпендикуляр к плоскости $\alpha$, то он перпендикулярен любой прямой, лежащей в этой плоскости, в том числе и прямой $OB$. Значит, треугольник $AOB$ является прямоугольным с прямым углом $\angle AOB = 90^\circ$. </p> <p> В прямоугольном треугольнике $AOB$ нам известны: <br> - катет $AO = \sqrt{3}$ см (противолежащий углу $\angle ABO$); <br> - гипотенуза $AB = 2$ см. </p> <p> Синус острого угла в прямоугольном треугольнике равен отношению противолежащего катета к гипотенузе. Для угла $\angle ABO$ имеем: <br> $\sin(\angle ABO) = \frac{AO}{AB}$ </p> <p> Подставим известные значения: <br> $\sin(\angle ABO) = \frac{\sqrt{3}}{2}$ </p> <p> Из этого равенства находим величину угла $\angle ABO$: <br> $\angle ABO = \arcsin\left(\frac{\sqrt{3}}{2}\right) = 60^\circ$. </p> <p> <strong>Ответ:</strong> $60^\circ$. </p>"
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                    "edition" => Illuminate\Database\Eloquent\Collection {#1124}
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            "tasks" => Illuminate\Database\Eloquent\Collection {#1189
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                0 => App\Models\Task {#1197
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                    "parent_branches" => Illuminate\Database\Eloquent\Collection {#1201
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                    "content" => Illuminate\Database\Eloquent\Collection {#1202
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                    0 => "*"
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                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
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                  #attributes: array:24 [
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                    "created_at" => "2026-04-10 13:58:26"
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                    "field_url" => "/10-klass/geometrija/glazkov-tetrad/00-57"
                    "field_display_title" => "57"
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                        0 => App\Models\Term {#1036}
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                    "content" => Illuminate\Database\Eloquent\Collection {#1211
                      #items: array:3 [
                        0 => App\Models\Element {#1220
                          #connection: "mysql"
                          #table: "elements"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: true
                          #with: []
                          #withCount: []
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                          +exists: true
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                          #attributes: array:7 [
                            "id" => 937136
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "edition" => Illuminate\Database\Eloquent\Collection {#1221
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                            "task" => array:2 [
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                              "type" => "task"
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                            "text" => "<p><strong>57</strong> В прямоугольном треугольнике ABC $ \angle C = 90^\circ, AB = 4\sqrt{3} $ см. Точка P не лежит в плоскости ABC и удалена от каждой вершины треугольника на расстояние $ 4\sqrt{3} $ см. Найдите угол между прямой PC и плоскостью ABC.</p><p><strong>Решение.</strong></p><p>Пусть PO — перпендикуляр к плоскости ABC. Поскольку отрезки $ PA, PB $ и $ PC $ — равные наклонные, проведенные из _______ к _______, то их проекции тоже _______ , т. е. $ OA = $ _______ $ = $ _______ , а потому точка $ O $ — центр окружности, _______ .</p><p>Следовательно, точка $ O $ — середина _______ .</p><p>Так как $ AB = $ _______ , то $ CO = \frac{1}{2} $ _______ $ = $ _______ см.</p><p>Искомый угол $ \varphi $ между прямой _______ и плоскостью _______ есть угол между _______ , т. е. $ \varphi = \angle $ _______ . $ \Delta POC $ прямоугольный, так как _______ , $ PC = $ _______ , $ CO = $ _______ см, поэтому $ \cos \varphi = $ _______ $ = $ _______ $ = $ _______ .</p><p>Отсюда получаем, что $ \varphi = $ _______ .</p><p><strong>Ответ.</strong></p><p>_______ .</p>"
                            "img" => array:1 [
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                                "name" => "57-1.jpg"
                                "alt" => null
                                "width" => "1646"
                                "height" => 1477
                                "path" => "/media/geometrija_10/glazkov-rt/0-00/57-1.webp?ts=1739375737"
                              ]
                            ]
                          ]
                          #original: array:7 [
                            "id" => 937136
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "edition" => Illuminate\Database\Eloquent\Collection {#1221}
                            "task" => array:2 [
                              "refs" => "738528"
                              "type" => "task"
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                            "text" => "<p><strong>57</strong> В прямоугольном треугольнике ABC $ \angle C = 90^\circ, AB = 4\sqrt{3} $ см. Точка P не лежит в плоскости ABC и удалена от каждой вершины треугольника на расстояние $ 4\sqrt{3} $ см. Найдите угол между прямой PC и плоскостью ABC.</p><p><strong>Решение.</strong></p><p>Пусть PO — перпендикуляр к плоскости ABC. Поскольку отрезки $ PA, PB $ и $ PC $ — равные наклонные, проведенные из _______ к _______, то их проекции тоже _______ , т. е. $ OA = $ _______ $ = $ _______ , а потому точка $ O $ — центр окружности, _______ .</p><p>Следовательно, точка $ O $ — середина _______ .</p><p>Так как $ AB = $ _______ , то $ CO = \frac{1}{2} $ _______ $ = $ _______ см.</p><p>Искомый угол $ \varphi $ между прямой _______ и плоскостью _______ есть угол между _______ , т. е. $ \varphi = \angle $ _______ . $ \Delta POC $ прямоугольный, так как _______ , $ PC = $ _______ , $ CO = $ _______ см, поэтому $ \cos \varphi = $ _______ $ = $ _______ $ = $ _______ .</p><p>Отсюда получаем, что $ \varphi = $ _______ .</p><p><strong>Ответ.</strong></p><p>_______ .</p>"
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                                "path" => "/media/geometrija_10/glazkov-rt/0-00/57-1.webp?ts=1739375737"
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                          #table: "elements"
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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "edition" => Illuminate\Database\Eloquent\Collection {#1223}
                            "task" => array:2 [
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                            "img" => array:1 [
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                                "width" => "694"
                                "height" => 1354
                                "path" => "/media/geometrija_10/glazkov-rt/1-00/57-1.webp?ts=1739375872"
                              ]
                            ]
                          ]
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                        2 => App\Models\Element {#1224
                          #connection: "mysql"
                          #table: "elements"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: true
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                            "id" => 1434320
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
                            "edition" => Illuminate\Database\Eloquent\Collection {#1225
                              #items: array:1 [
                                0 => App\Models\Edition {#1104}
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                              #escapeWhenCastingToString: false
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                            "task" => array:2 [
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                            "text" => "<p><strong>Решение.</strong></p><p>Пусть $PO$ — перпендикуляр к плоскости $ABC$. Поскольку отрезки $PA$, $PB$ и $PC$ — равные наклонные, проведенные из одной точки $P$ к плоскости $ABC$, то их проекции тоже равны, т. е. $OA = OB = OC$. А потому точка $O$ — центр окружности, описанной около треугольника $ABC$. Так как $\triangle ABC$ — прямоугольный, то центр описанной окружности является серединой гипотенузы. Следовательно, точка $O$ — середина гипотенузы $AB$. Так как $AB = 4\sqrt{3}$ см, то $CO = \frac{1}{2} AB = \frac{4\sqrt{3}}{2} = 2\sqrt{3}$ см.</p><p>Искомый угол $\phi$ между прямой $PC$ и плоскостью $ABC$ есть угол между этой прямой (наклонной) и ее проекцией $OC$ на плоскость, т. е. $\phi = \angle PCO$. $\triangle POC$ прямоугольный, так как $PO$ перпендикулярен плоскости $ABC$, а значит, и прямой $OC$, лежащей в этой плоскости. В прямоугольном $\triangle POC$ известны гипотенуза $PC = 4\sqrt{3}$ см и катет $CO = 2\sqrt{3}$ см, поэтому $\cos \phi = \frac{CO}{PC} = \frac{2\sqrt{3}}{4\sqrt{3}} = \frac{1}{2}$. Отсюда получаем, что $\phi = 60^\circ$.</p><p><strong>Ответ:</strong> $60^\circ$.</p>"
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                            "text" => "<p><strong>Решение.</strong></p><p>Пусть $PO$ — перпендикуляр к плоскости $ABC$. Поскольку отрезки $PA$, $PB$ и $PC$ — равные наклонные, проведенные из одной точки $P$ к плоскости $ABC$, то их проекции тоже равны, т. е. $OA = OB = OC$. А потому точка $O$ — центр окружности, описанной около треугольника $ABC$. Так как $\triangle ABC$ — прямоугольный, то центр описанной окружности является серединой гипотенузы. Следовательно, точка $O$ — середина гипотенузы $AB$. Так как $AB = 4\sqrt{3}$ см, то $CO = \frac{1}{2} AB = \frac{4\sqrt{3}}{2} = 2\sqrt{3}$ см.</p><p>Искомый угол $\phi$ между прямой $PC$ и плоскостью $ABC$ есть угол между этой прямой (наклонной) и ее проекцией $OC$ на плоскость, т. е. $\phi = \angle PCO$. $\triangle POC$ прямоугольный, так как $PO$ перпендикулярен плоскости $ABC$, а значит, и прямой $OC$, лежащей в этой плоскости. В прямоугольном $\triangle POC$ известны гипотенуза $PC = 4\sqrt{3}$ см и катет $CO = 2\sqrt{3}$ см, поэтому $\cos \phi = \frac{CO}{PC} = \frac{2\sqrt{3}}{4\sqrt{3}} = \frac{1}{2}$. Отсюда получаем, что $\phi = 60^\circ$.</p><p><strong>Ответ:</strong> $60^\circ$.</p>"
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№56 (с. 46)
Условие. №56 (с. 46)
скриншот условия
Геометрия, 10 класс рабочая тетрадь, авторы: Глазков Юрий Александрович, Юдина Ирина Игоревна, Бутузов Валентин Фёдорович, издательство Просвещение, Москва, 2020, коричневого цвета, страница 46, номер 56, Условие

56 Через точку А, удаленную от плоскости $\alpha$ на расстояние $\sqrt{3}$ см, проведена прямая, пересекающая плоскость $\alpha$ в точке В. Найдите угол между прямой $AB$ и плоскостью $\alpha$, если $AB = 2$ см.

Решение.

Пусть отрезок $AO$ — перпендикуляр к плоскости $\alpha$. Тогда $AO = —$, прямая $OB$ — проекция прямой $AB$ на плоскость $\alpha$, и угол между прямой $AB$ и плоскостью $\alpha$ равен $\angle ABO$. Из прямоугольного треугольника $AOB$ находим: $\sin \angle ABO = — = —$, следовательно, $\angle ABO = —$.

Ответ.

Решение. №56 (с. 46)
Геометрия, 10 класс рабочая тетрадь, авторы: Глазков Юрий Александрович, Юдина Ирина Игоревна, Бутузов Валентин Фёдорович, издательство Просвещение, Москва, 2020, коричневого цвета, страница 46, номер 56, Решение
Решение 2. №56 (с. 46)

По условию задачи, точка A удалена от плоскости $\alpha$ на расстояние $\sqrt{3}$ см. Это расстояние равно длине перпендикуляра, опущенного из точки A на плоскость $\alpha$. Обозначим основание этого перпендикуляра как точку $O$. Таким образом, длина отрезка $AO$ равна $\sqrt{3}$ см, и $AO \perp \alpha$.

Прямая, проходящая через точки $A$ и $B$, является наклонной к плоскости $\alpha$. Отрезок $OB$ является проекцией наклонной $AB$ на плоскость $\alpha$.

Углом между прямой и плоскостью называется угол между этой прямой и её проекцией на плоскость. Следовательно, нам нужно найти величину угла $\angle ABO$.

Рассмотрим треугольник $AOB$. Так как $AO$ — перпендикуляр к плоскости $\alpha$, то он перпендикулярен любой прямой, лежащей в этой плоскости, в том числе и прямой $OB$. Значит, треугольник $AOB$ является прямоугольным с прямым углом $\angle AOB = 90^\circ$.

В прямоугольном треугольнике $AOB$ нам известны:
- катет $AO = \sqrt{3}$ см (противолежащий углу $\angle ABO$);
- гипотенуза $AB = 2$ см.

Синус острого угла в прямоугольном треугольнике равен отношению противолежащего катета к гипотенузе. Для угла $\angle ABO$ имеем:
$\sin(\angle ABO) = \frac{AO}{AB}$

Подставим известные значения:
$\sin(\angle ABO) = \frac{\sqrt{3}}{2}$

Из этого равенства находим величину угла $\angle ABO$:
$\angle ABO = \arcsin\left(\frac{\sqrt{3}}{2}\right) = 60^\circ$.

Ответ: $60^\circ$.

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