tlong di bantu ya..klau bisa besrta caranya

sin x = -1/2
sin x = sin 210
x = 210 + 360k
k = 0 maka x = 210°
x = 180 - 210 + 360k
x = -30 + 360k
k = 1 maka x= 330°
hp = {210°, 330°}