October 2021 0 51 Report
Нужна помощь!
Определите знаки выражения:
1) sin300° * cos200°;
2) sin193° * tg202°;
3) cos40° * sin120° * tg150°;
4) tg97° *ctg197° * cos297°.
Заранее, большое спасибо!
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