Trigonometry Examples

$\sin (x) (\sin (3 x) + \sin (5 x)) = \cos (x) (\cos (3 x) - \cos (5 x))$

Step 1

The provided equation is an identity.

$\sin (x) (\sin (3 x) + \sin (5 x)) = \cos (x) (\cos (3 x) - \cos (5 x))$ is an identity