Предмет: Алгебра, автор: artemnekrasow2

cos 630 - sin 1470 - ctg 1125.

Ответы

Автор ответа: Spartan832

Скидываем по 360 (полные обороты)

cos630* - sin 1470* - ctg 1125*=cos(-90)-sin(30) - ctg (45)=0-1/2-1=-3/2

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