Trigonometry Examples

$\sin (4 x) = 4 \sin (x) \cos^{3} (x) - 4 \sin^{3} (x) \cos (x)$

Step 1

The provided equation is an identity.

$\sin (4 x) = 4 \sin (x) \cos^{3} (x) - 4 \sin^{3} (x) \cos (x)$ is an identity