Trigonometry Examples

$\cos^{4} (x) - \sin^{4} (x) = 1$

Step 1

The provided equation is not an identity.

$\cos^{4} (x) - \sin^{4} (x) = 1$ is not an identity

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$