If \[{{\sin }^{-1}}x+{{\sin }^{-1}}y=\frac{\pi }{2}\], then \[\frac{1+{{x}^{4}}+{{y}^{4}}}{{{x}^{2}}-{{x}^{2}}{{y}^{2}}+{{y}^{2}}}\] is equal to

If \[{{\sin }^{-1}}x+{{\sin }^{-1}}y=\frac{\pi }{2}\], then \[\frac{1+

1.	If \[{{\sin }^{-1}}x+{{\sin }^{-1}}y=\frac{\pi }{2}\], then \[\frac{1+{{x}^{4}}+{{y}^{4}}}{{{x}^{2}}-{{x}^{2}}{{y}^{2}}+{{y}^{2}}}\] is equal to
A.	1
B.	2
C.	\[\frac{1}{2}\]
D.	none of these
Answer» C. \[\frac{1}{2}\]

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If \[{{\sin }^{-1}}x+{{\sin }^{-1}}y=\frac{\pi }{2}\], then \[\frac{1+{{x}^{4}}+{{y}^{4}}}{{{x}^{2}}-{{x}^{2}}{{y}^{2}}+{{y}^{2}}}\] is equal to

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