Precalculus Examples

$\cos (θ) = \frac{\sqrt{2}}{2}$

Step 1

The result can be shown in multiple forms.

Exact Form:

$\cos (θ) = \frac{\sqrt{2}}{2}$

Decimal Form:

$\cos (θ) = 0.70710678 \dots$

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