Предмет: Геометрия, автор: leveshankulov

В треугольнике ABC угол C прямой, sin A = 0.8. Найдите AB и AC, если ВС=8.

Ответы

Автор ответа: mariana658

Синус неизвестного угла - это отношение противолежащего катета к гипотенузе:
sinx = а/с, следовательно
sina=BC/AB=8/AB
0,4=8/AB
AB=8/0,4
AB=20
Ответ: AB=20

leveshankulov: в условии sinA=0,8, а не 0,4!

kopter910: она с интернета позаимствовал а

Автор ответа: kopter910

Ответ:

.....................

Приложения:

leveshankulov: спасибо большое☺️

kopter910: не за что

kopter910: сделай лучший ответом пожалуйста

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