Trigonometry Examples

${(\frac{\sqrt{5}}{5})}^{2} + {(- \frac{2 \sqrt{5}}{5})}^{2} = 1$

Step 1

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

True

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