Найдите \(arccos (- \frac{1}{2}).\) \(\frac{2π}{3}\) \(-\frac{2π}{3}\) \(\frac{π}{3}\) \(-\frac{π}{3}\)
Задание

Найдите \(arccos (- \frac{1}{2}).\)

  • \(\frac{2π}{3}\)
  • \(-\frac{2π}{3}\)
  • \(\frac{π}{3}\)
  • \(-\frac{π}{3}\)