Jawabanmu

2014-02-15T15:56:46+07:00
Sin 2x = ½√3 sin 2x = sin 60° 2x = 60° → 2x = 60°+k.360° → x = 30°+180° k = 0 → x = 30° k = 1 → x =30+180 = 210° →2x = 120+k.360 → x = 60+180 k=0 → x = 60° k=1 → x = 60+180 = 240° HP = {30°, 60°, 210°, 240°}