Trigonometry Examples

$\frac{\cos (2 x)}{1 + \sin (2 x)} = \frac{\cot (x) - 1}{\cot (x) + 1}$

Step 1

The provided equation is an identity.

$\frac{\cos (2 x)}{1 + \sin (2 x)} = \frac{\cot (x) - 1}{\cot (x) + 1}$ is an identity