Trigonometry Examples

$x - 3 \cos (x) = 0$

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

$x \approx - 2.93810039, - 2.66317888, 1.17012095$

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