TrigonometryMediumGraphs of Sine and Cosine ShareGraphs of Sine and Cosine · Medium problemWhat is the minimum value of y=12cos(13x−π3)−3y = \dfrac{1}{2}\cos\left(\dfrac{1}{3}x - \dfrac{\pi}{3}\right) - 3y=21cos(31x−3π)−3?Check Show answer Walk through it step by step Practice more like this Review this concept