Trigonometry Examples

$\cos (2 x) \cos (x) - \sin (2 x) \sin (x) = \frac{\sqrt{3}}{2}$

Step 1

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

$x \approx 0.17453292 + \frac{2 π n}{3}, 1.91986217 + \frac{2 π n}{3}$ , for any integer $n$

Step 2