2 sin (150 + x)=1, jika 00<= x <=1800

TriGOnomeTRI

2 sin (150° + x) = 1
sin (150° + x) = 1/2
150° + x = 30° → x = -120°
atau
150° + x = 150° → x = 0°

yg memenuhi interval 0° ≤ x ≤ 180° :
0°