Trigonometry Examples

$\sec^{4} (x) - \tan^{4} (x) = 1 + \frac{\sin^{2} (x)}{\cos^{2} (x)}$

Step 1

The provided equation is not an identity.

$\sec^{4} (x) - \tan^{4} (x) = 1 + \frac{\sin^{2} (x)}{\cos^{2} (x)}$ is not an identity