SubArea: Sine, cosine, tangent and cotangentLevel: BProject ID: 9000033801Accepted: 1Clonable: 0Easy: 1Which of the numbers in the list is a period (not necessarily the smallest period) of the function \(m\colon y =\cos x\)?\(4\pi \)\(\pi \)\(5\pi \)\(3\pi \)
