Sin 630°+cos420°-tg540°

Question

Sin 630°+cos420°-tg540°

Answer 1

Sin 630° + cos 420° - tg 540°=sin(360°+270°) + cos(360°+60°) + tg (360°+180°)= sin(-90°) + cos(60°) + tg(180°)=-1+0.5+0=-0.5
Ответ: -0.5