Trigonometry Examples

$\frac{\sin (3 x) + \cos (3 x)}{\cos (x) - \sin (x)} = 1 + 2 \sin (2 x)$

Step 1

The provided equation is an identity.

$\frac{\sin (3 x) + \cos (3 x)}{\cos (x) - \sin (x)} = 1 + 2 \sin (2 x)$ is an identity