Question

Решите уравнение cos(pi/3+x)=o

Answer 1

$\cos(\frac{\pi}{3}+x)=0\\\\ \frac{\pi}{3}+x = \frac{\pi}{2}+\pi n\\\\ x = \frac{\pi}{2}-\frac{\pi}{3}+\pi n\\\\ x = \frac{\pi}{6}+\pi n, n \in Z$