Question

Tolong dibantu yaaa ~
himpunan penyelesaian dari 2 sin x - 1 = 0

Answer 1

2 sin x - 1 = 0
2 sin x = 1
sin x = 1/2
sin x = sin 30
x = 30 + k.360
k = 0 ===> x = 30
atau
x = (180 - 30) + k.360
x = 150 + k.360
k = 0 ====> x = 150