Trigonometry Examples

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

Step 1

Apply the sine double-angle identity.

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

Step 2

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

$x \approx 0.1, - \frac{1}{5}, \frac{1}{5}, - 0.3, 0.3, \frac{2}{5}, - \frac{1}{2}$

Step 3