How can I solve this?

2sin^2x - 1 =0

1 Answer
Mar 13, 2018

x = 45° and x = -45°

Explanation:

Solve for x
2sin^2x - 1 = 0
2sin^2x = 1
sin^2x = 1/2
sinx = +-1/(sqrt2)
x = sin^-1(1/(sqrt2)) and x = sin^-1(-1/(sqrt2))
x = 45° and x = -45°