Question

Selesaikanlah:

a. 3 sin 150° + 3 cos 120°

b. 2 cos 260° - 4 sin 210°

c. (2 sin 60°+ cos 60°)2+ (sin 60° - 2 cos 60°)

d. ctg2 45°. cos 30° . tg2 60° . ctg2 30°

e. 2 tg 60° / 1+ tg2 60°

Answer 1

A. 3/2 - 3/2 = 0
b. -
c. 4.4-0.1= 4.3
d. 0. 1/2 ^3. -^3. 1/3 ^3= 0
e. -