Предмет: Геометрия, автор: Fragende

в прямоугольном треугольнике ABC угол С =90 градусов,найдите значение синуса угла А если косинус угла В равен 3:5

Ответы

Автор ответа: sweatdream1

0

sinA=CB/BA
cosB=CB/BA
sinA=cosB=3/5=0.6

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