Trigonometry Examples

$\sin (x) + \sin (3 x) = 2 \sin (2 x) \cos (x)$

Step 1

Graph each side of the equation.

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

$y = 2 \sin (2 x) \cos (x)$

Step 2

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