Question

Himpunan penyelesaian dari 4 sin² 2x = 1 ?

Answer 1

Sin ^2 2x = 1/4
Sin 2x = 1/2
sin 2x = sin 30
2x = 30
x= 30/2 = 15

atau
sin 2x = sin 150
2x= 150
x= 150/2 = 75
jd Hp = 15, 75