Trigonometry Examples

$2 \cos^{2} (x) + 4 \cos (x + 2) = 0$

Step 1

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

$x \approx 0.08976193 + 2 π n, 2.42441891 + 2 π n$ , for any integer $n$

Step 2