2 sin^2x=2(1-cos^2x)

Question

2 sin^2x=2(1-cos^2x)

Answer 1

2sin²x=2(1-cos²x)
2sin²x=2-2cos²x
2sin²x=2-2(1-sin²x)
2sin²x=2-2+2sin²x
0=0