Trigonometry Examples

$\frac{1 - \tan (x)}{1 + \tan (x)} = \frac{\cot (x - 1)}{\cot (x + 1)}$

Step 1

The provided equation is not an identity.

$\frac{1 - \tan (x)}{1 + \tan (x)} = \frac{\cot (x - 1)}{\cot (x + 1)}$ is not an identity