Trigonometry Examples

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

Step 1

Graph.

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

Step 2

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