Precalculus Examples

$\sin (3 x) + \sin (6 x) = 0$

Step 1

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x = \frac{2 π n}{3}, \frac{2 π}{9} + \frac{2 π n}{3}, \frac{π}{3} + \frac{2 π n}{3}, \frac{4 π}{9} + \frac{2 π n}{3}$ , for any integer $n$

Step 2