Предмет: Геометрия, автор: antonagrisenko

Вписаний у коло кут DAB спирається на діаметр DB.UAD = 60º. Знайдіть довжину діаметра DB, якщо AD = см. 60° D в​

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Автор ответа: liftec74
1

Ответ:  6 cm

Объяснение:

ΔDAB- Прямоугольный ( угол DAB - прямой-опирается на диаметр.

∡B=1/2 ∪AB=30° Тогда BD= AD/sin ∡B = 3/0.5=6

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