Tan1/2[sin^-1 2x/1+x^2+cos^-1 1-y^2/1+y^2]=x+y/1-xy,if |x|<1,Y>0 and xy>1.

Asked by Balbir | 28th Apr, 2017, 05:45: PM

Expert Answer:

Answered by Rebecca Fernandes | 24th Nov, 2017, 12:57: PM