Trigonometry Examples

$1 - \frac{44}{π^{2}} \cdot \cos (\frac{π x}{11}) + \frac{1}{9} \cdot \cos (\frac{3 (π x)}{11})$

Step 1

Graph.

$1 - \frac{44}{π^{2}} \cdot \cos (\frac{π x}{11}) + \frac{1}{9} \cdot \cos (\frac{3 (π x)}{11})$

Step 2