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Verified answer
Jawabsin x + sin(x-60) = 0
2 sin 1/2 (2x - 60) cos 1/2 ( 60) = 0
2 sin (x - 30) cos (30) =0
2 (1/2 √3). sin (x - 30) =0
sin (x - 30) = 0
sin (x - 30) = 0 = sin 0
x - 30 = 0
x = 30
sin (x - 30) = 0 = sin 180
x - 30 = 180
x = 210
x pada 0 ≤ x ≤ 360 = { 30, 210)