Trigonometry Examples

$\cos (4 x) = \frac{\sqrt{2}}{2}$

Step 1

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

$x \approx 0.19634954 + \frac{π n}{2}, 1.37444678 + \frac{π n}{2}$ , for any integer $n$

Step 2