Предмет: Геометрия, автор: cocosik95

У трикутнику АВС відомо, що кут С=90* , ВС=15 см, АВ=25 см. Чому дорівнює sin A А)3/4; Б) 4/3; В) 3/5; Г) 5/3

Ответы

Автор ответа: sergalievjansultan20

1

Ответ:

COB=90○

т.к. угол CB=45°

следовательно углы горизонтальны и равны между треугольниками

Значит: А)30°

Б)60°

В)120°

Г)180°

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