Trigonometry Examples

$2 \cos (2 x) = - \sqrt{2}$

Step 1

Graph each side of the equation.

$y = 2 \cos (2 x)$

$y = - \sqrt{2}$

Step 2

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