Question

If sin-1 x +sin-1y+sin-1z = pi then x4+ y4+ z4+ 4x2y2z2=k ( x2y2+ y2z2+z2x2) where k =?

a.1 b.2 c.4 d. none

Answer 1

b.2
c.4
udshchvstkbddh Shinde idiotic