Question

Решите уравнение
cos(x/2+π/3)=-√3/2

Answer 1

Ответ:

$cos( \frac{x}{2} + \frac{\pi}{3} ) = - \frac{ \sqrt{3} }{2} \\ \frac{x}{2} + \frac{\pi}{3} = + - \frac{\pi}{6} + 2\pi \times n \\ \frac{x}{2} = + - \frac{\pi}{6} - \frac{\pi}{3} + 2\pi \times n \\ x = + - \frac{\pi}{3} - \frac{2\pi}{3} + 4\pi \times n$