Решите уравнение: \(\sqrt{0,5cosx}=sin\frac{x}{2}.\)

• \(\frac{\pi}{3}+2\pi{k},k\in{Z}\)
• \(\frac{\pi}{6}+2\pi{k},k\in{Z}\)
• \(\frac{2\pi}{3}+2\pi{k},k\in{Z}\)
• \(\pm\frac{\pi}{3}+\pi{k},k\in{Z}\)