Question

Tg(360°-2)+ctg(270°-2)+tg(180°-2)+ctg(90°-2) упростить . Помогииите пожалуйста

Answer 1

Tg(360°-2)+ctg(270°-2)+tg(180°-2)+ctg(90°-2) = -Tg(2)+tg(2)-tg(2)+tg(2) =0