Q. The solution of the equation 2 cos - 1 x = sin - 1 2 x 1 - x 2 a. [-1,0] b. [0,1] c. [-1,1] d. 1 2 , 1 Share with your friends Share 0 Neha Sethi answered this Dear student 2cos-1x=sin-12x1-x2cos-12x2-1=sin-12x1-x2 As 2cos-1x=cos-12x2-1sin-11-2x2-12=sin-12x1-x2 As cos-1x=sin-11-x2sin-11-4x4-1+4x2=sin-12x1-x2sin-12x1-x2=sin-12x1-x2Since LHS and RHS are equal so we cannot proceed further in the question.Please recheck the question. Regards 0 View Full Answer