Trigonometry Examples

${(\sin (x) + \cos (x))}^{4}$

Step 1

Use the Binomial Theorem.

$\sin^{4} (x) + 4 \sin^{3} (x) \cos (x) + 6 \sin^{2} (x) \cos^{2} (x) + 4 \sin (x) \cos^{3} (x) + \cos^{4} (x)$

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