TrigonometryEasyGraphs of Sine and Cosine ShareGraphs of Sine and Cosine · Easy problemGive the equation of the midline of y=−4cos(13x+π3)+4y = -4\cos\left(\dfrac{1}{3}x + \dfrac{\pi}{3}\right) + 4y=−4cos(31x+3π)+4.Check Show answer Walk through it step by step Practice more like this Review this concept