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sin x = sin 210
x = 210 + k.360 .........(1)
atau
x = (180 - 210) + k.360
x = -30 + k.360 ...............(2)
Persamaan (1)
x = 210 + k.360
k = 0 → x = 210
Persamaa )2)
x = -30 + k.360
k = 1 → x = -30 + 360 = 330
Hp = {210, 330}