Question

Verify the following identity:
1-2cos^2(x) = 2sin^2(x) - 1

Please include steps! :/ Thank you!

Answer 1

Sin^2 x + cos^2 x = 1

Answer 2

1-2(1-sin^2x) = 1-2+2sin^2x = 2sin^2x-1 :D

Answer 3

Thank you!!