Предмет: Геометрия, автор: dashatokareva5

в треугольнике ABC угол C равен 90°, BC=20,sinA=5/8.Найдите AB. помогите пожалуйста

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Автор ответа: REMBER

0

пусть ВС и АС - катеты, а АВ - гипотенуза.
sinA = ВС / АВ (синус угла - отношение противолежащего катета к гипотенузе)
5 / 8 = 20 / AB
АВ = 32

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