Write the principal solution for cosx =1 ... Share with your friends Share 0 Radhika Gupta answered this Dear Student, Solution: We know that cos(0)=1 and cos(2π-0)=cos(2π)=1{As cosθ is positive in the fourth quadrant}Therefore principal solutions for cosx=1are x=0 and x=2π Regards 0 View Full Answer
