Algebra Examples

$\cos^{2} (\frac{2 π}{3}) + \sin^{2} (\frac{2 π}{3})$

Step 1

Rearrange terms.

$\sin^{2} (\frac{2 π}{3}) + \cos^{2} (\frac{2 π}{3})$

Step 2

Apply pythagorean identity.

$1$

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