Trigonometry Examples

$\frac{\tan^{2} (x)}{\sec (x) + 1} = \frac{1 - \cos (x)}{\cos (x)}$

Step 1

The provided equation is an identity.

$\frac{\tan^{2} (x)}{\sec (x) + 1} = \frac{1 - \cos (x)}{\cos (x)}$ is an identity