Find the value of $ \tan\large\frac{1}{2}$$ \bigg[ \sin^{-1}\large \frac{2x}{1+x^2}$$+\cos^{-1}\large\frac{1-y^2}{1+y^2} \bigg].$$ \: where \: |x| < 1, y > 0 \: and \: xy < 1.$

Share

Please log in or register to add a comment.