Trigonometry Examples

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

Step 1

Apply the cosine double-angle identity.

$\frac{1}{\cos (2 x)}$

Step 2

Convert from $\frac{1}{\cos (2 x)}$ to $\sec (2 x)$ .

$\sec (2 x)$

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