Trigonometry Examples

$2 \cos^{2} (x) + \cos (x) + 15 = 0$

Step 1

Graph each side of the equation. The solution is the x-value of the point of intersection.

No solution

Step 2

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