Trigonometry Examples

$4 \cos^{2} (x) + 2 \cos (x) - 2 = 0$

Step 1

Graph each side of the equation.

$y = 4 \cos^{2} (x) + 2 \cos (x) - 2$

$y = 0$

Step 2

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