cos x = 0,5 \(\frac{\pi }{3} + 2\pi n\) \(\frac{5\pi }{3} + 2\pi n\) \(\frac{2\pi }{3} + 2\pi n\)

Задание

cos x = 0,5

\(\frac{\pi }{3} + 2\pi n\)
\(\frac{5\pi }{3} + 2\pi n\)
\(\frac{2\pi }{3} + 2\pi n\)