Question:

For sin2x + cosx = 0, use a double-angle or half-angle

Last updated: 8/11/2022

For sin2x + cosx = 0, use a double-angle or half-angle

For sin2x + cosx = 0, use a double-angle or half-angle formula to simplify the equation and then find all solutions of the equation in the interval [0, 2π). The answers are X1 =___________ X2 =___________ X3 =___________ and X4 =___________ with x1 < x2 < x3<x4