Trigonometry Examples

$\sqrt{1 - \sin^{2} (x)}$

Step 1

Apply pythagorean identity.

$\sqrt{\cos^{2} (x)}$

Step 2

Pull terms out from under the radical, assuming positive real numbers.

$\cos (x)$

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