Question

Помогите пожалуйста!

Answer 1

........................

Answer 2

tg225° * Cos330° * Ctg120° * Sin240° = tg(180° + 45°) * Cos(360° - 30°) *

* Ctg(180° - 60°) * Sin(180° + 60°) = tg45° * Cos30° *(-  Ctg60°) * (- Sin60°) =

$=1*frac{sqrt{3} }{2}*frac{sqrt{3} }{3}*frac{sqrt{3} }{2}=frac{sqrt{3} }{4}$