Question

РЕШИТЕ, НЕ ИГНОРЬТЕ!
сos(п/3 - x/2) = 0

Answer 1

$cos(\frac{\pi}{3}-\frac{x}{2})=0\\ \\ \frac{\pi}{3}-\frac{x}{2}=\frac{\pi}{2}+\pi k\\ \\ -\frac{x}{2}=\frac{\pi}{2}-\frac{\pi}{3}+\pi k\\ \\ -\frac{x}{2}=\frac{\pi}{6}+\pi k\\ \\ \frac{x}{2}=-\frac{\pi}{6}-\pi k\\ \\ x=-\frac{\pi}{3}-2\pi k\\ \\OTBET: -\frac{\pi}{3}+2\pi k; k \in \mathbb {Z}$