Trigonometry Examples

$\cos (- \frac{3 \sqrt{13}}{13} + \frac{1}{2})$

Step 1

The result can be shown in multiple forms.

Exact Form:

$\cos (- \frac{3 \sqrt{13}}{13} + \frac{1}{2})$

Decimal Form:

$0.94537597 \dots$