Penyelesaian persamaan 4sin kuadrat x - 3 = 0 pda interval 0 < x < phi adalah?

4 sin² x - 3 = 0
Misal: sin x = a
4a² - 3 = 0
4a² = 3
a² = 3/4
a = √(3/4) = (√3)/2 = 1/2(√3)
sin x = 1/2(√3)
x = 60°, 120°