Trigonometry Examples

$\cos (x) \cos (2 x) - \sin (x) \sin (2 x) = 0$

Step 1

Graph each side of the equation.

$y = \cos (x) \cos (2 x) - \sin (x) \sin (2 x)$

$y = 0$

Step 2

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