Question

Find the exact value, in radians, of the expression. sin^-1 (1/Squareroot 2)

Answer 1

sin^-1 [ 1/sqrt(2) ]   =   45 degrees

                               =   45 X ( pi / 180 ) radians        [ 1 degree  =  ( pi / 180 ) radians ]

sin^-1 [ 1/sqrt(2) ]    =   (pi / 4) radians