Trigonometry Examples

$\cos (\frac{13}{2} x) \cos (6 x) + \sin (\frac{13}{2} x) \sin (6 x)$

Step 1

Graph.

$\cos (\frac{13}{2} x) \cos (6 x) + \sin (\frac{13}{2} x) \sin (6 x)$

Step 2

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