Trigonometry Examples

$\sin^{2} (20) + \cos^{2} (20) = 1$

Step 1

The left side $1$ is equal to the right side $1$ , which means that the given statement is always true.

True

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