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