Предмет: Геометрия, автор: Dyaaa

50 БАЛЛОВ!! ПЖ С РИСУНКОМ!! Площина, що проходить через дві твірні конуса, перетинає основу конуса по хорді, яку видно із центра основи під кутом α. Площина перерізу уторворює з висотою конуса кут β. Знайдіть площу бічної поверхні конуса, якщо його висота дорівнює Н.

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Автор ответа: lidiasaraa3

на фото....................

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