Предмет: Геометрия, автор: Reach

в треугольнике ABC угол C равен 90 sinA=3/5 найдите cosB
Пожалуйста с решением.

Ответы

Автор ответа: drama46
0

Ответ: 3/5

 

В прямоугольном тиреугольнике синус одного осторого угла равен косинусу второго, независимо от того, какие углы вы берете.

Потому и синус угла А и косинус угла В, который нужно найти, равны 3/5.

 

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