Trigonometry Examples

$\frac{\cos (u)}{1 + \tan (u)} - \frac{\sin (u)}{1 + \cot (u)} = \cos (u) - \sin (u)$

Step 1

The provided equation is an identity.

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