Trigonometry Examples

$\cos (9 a) - \cos (5 a) = \sqrt{3} \cdot \sin (2 a)$

Step 1

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

$a \approx 0, - 0.14959965, - 0.2991993, 0.5983986, 0.74799825, - 1.04719755, - 1.1967972$

Step 2