TrigonometryMediumGraphs of Sine and Cosine ShareGraphs of Sine and Cosine · Medium problemWhat is the maximum value of y=3cos(13x−π2)y = 3\cos\left(\dfrac{1}{3}x - \dfrac{\pi}{2}\right)y=3cos(31x−2π)?Check Show answer Walk through it step by step Practice more like this Review this concept