Hi Mate!!!We KNOW a well know IDENTITY I,e Sin-1x + Cos-1x = π/2Exp:-. (π/2) -2Cos-1x = π/6(π/2) - (π/6) = 2 Cos-1x2 Cos-1x = π /3Cos-1x = π/6x = Cos(π/6)x = √3/2Have a nice TIME...
Your experience on this site will be improved by allowing cookies. Read Cookie Policy