sinx*cosx=0,find the value of x in radius form?

Answer 1

I think you must mean "radians form" (for the angle x), not "radius form", which makes no sense here.

sin x cos x = = 0 when either sin x or cos x = 0.

This happens at at x = 0, pi/2, pi, 3 pi/2 and 2 pi radians.