SubArea: Trigonometric equations and inequalitiesLevel: BProject ID: 1003086110Accepted: 1Clonable: 0Easy: 0Which of the following intervals contains four solutions of the equation \( \cos x = 0.5 \)?\( [\pi;5\pi] \)\( [-2\pi;\pi] \)\( [-4\pi;-2\pi] \)\( [5\pi;10\pi] \)
