TrigonometryHardTrigonometric Equations ShareTrigonometric Equations · Hard problemSolve cos(x)=−12\cos{\left(x \right)} = - \frac{1}{2}cos(x)=−21 for xxx on [0,2π)[0, 2\pi)[0,2π). Enter the solutions in increasing order, one per box. Show answer Walk through it step by step Practice more like this Review this concept