Предмет: Алгебра, автор: horomichan666

Как построить углы arcsin 1/3; π-arcsin 1/3?

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Автор ответа: red321

27

синуса углов откладываются на оси ОY. отлаживаем на оси ОY отрезок равный 1/3 и проводим прямую параллельную оси ОХ. прямая пересечёт круг в двух точках. получаются 2 угла(углы отсчитываются от оси ОХ до точки, против часовой).
меньший угол будет равен arcsin1/3(т.к. arcsinx определён на промежутке от [-пи/2;пи/2], а больший пи-arcsin1/3

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