Trigonometry Examples

$\cos (130) \cos (10) + \sin (10) \sin (130)$

Step 1

The result can be shown in multiple forms.

Exact Form:

$\cos (130) \cos (10) + \sin (10) \sin (130)$

Decimal Form:

$- 0.5$

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