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