question_answer

If \[{{\tan }^{-1}}x+{{\cos }^{-1}}\frac{y}{\sqrt{(1+{{y}^{2}})}}={{\sin }^{-1}}\frac{3}{\sqrt{10}}\]and both x and y are positive and integral, then x and Y=

A)  (1, 2) and (2, 7)

B)  (1, 2) and (1, 7)

C)  (1, 7) and (2, 7)

D)  (1, 7) and (2, 1)

E)  None of these