The greatest value of A= sin x.cos x is

The greatest value of sin x cos x is

The greatest value of "sin"x."cos"x is

The greatest value of sin^(3)x+cos^(3)x in [0,(pi)/(2)] is

The greatest value of sin^(3)x+cos^(3)x in [0,(pi)/(2)] is

The greatest value of the function y= sin^(2) x -20cos x +1 is

The least and the greatest values of (sin^(-1)x)^3+(cos^(-1)x)^3 are (-pi)/2,pi/2 (b) (-pi^3)/8,(pi^3)/8 (pi^3)/(32),(7pi^3)/8 (d) none of these

The least and the greatest values of (sin^(-1)x)^3+(cos^(-1)x)^3 are (a) (-pi)/2,pi/2 (b) (-pi^3)/8,(pi^3)/8 (c) (pi^3)/(32),(7pi^3)/8 (d) none of these