Trigonometry Examples

$1 - \cos (x) = \sqrt{\frac{{(1 - \cos (x))}^{2}}{1 - \cos^{2} (x)}}$

Step 1

The provided equation is not an identity.

$1 - \cos (x) = \sqrt{\frac{{(1 - \cos (x))}^{2}}{1 - \cos^{2} (x)}}$ is not an identity