Trigonometry Examples

$2 \cos^{2} (\frac{x}{2}) = \cos (2 x)$

Step 1

Graph each side of the equation.

$y = 2 \cos^{2} (\frac{x}{2})$

$y = \cos (2 x)$

Step 2

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