If sin^(-1)x+sin^(-1)y=pi/2 , then (1+x...

If `sin^(-1)x+sin^(-1)y=pi/2 , ` then `(1+x^4+y^4)/(x^2-x^2y^2+y^2)` is equal to a)1 b)2 c)`1//2` d)None of these

A

1

B

2

C

`1//2`

D

None of these

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The correct Answer is:

B

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