Jawabanmu

2014-09-01T23:25:07+07:00
X = r cos 150 = 8 cos 150 = 8.  -1/2. akar 3 = -4 akar 3
y = r sin 150 = 8 sin 150 = 8 . 1/2 = 4
Jadi koordinat cartesiusnya (-4akar 3, 4)