Trigonometry Examples

$\sin (x) + \sin (3 x)$

Step 1

Apply the sine triple-angle identity.

$\sin (x) - 4 \sin^{3} (x) + 3 \sin (x)$

Step 2

Add $\sin (x)$ and $3 \sin (x)$ .

$4 \sin (x) - 4 \sin^{3} (x)$

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