Trigonometry Examples

$\cos (x) - \sqrt{1 - 3 \cos^{2} (x)} = 0$

Step 1

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

$x \approx - 1.04719755, 1.04719755, - 5.23598775, 5.23598775, - 7.33038285, 7.33038285, - 11.51917306$

Step 2