If \[{{\sin }^{-1}}x=\theta +\beta \]and \[{{\sin }^{-1}}y=\theta -\beta ,\]then \[1+xy=\]

\[{{\cos }^{2}}\theta +{{\cos }^{2}}\beta \]

\[{{\sin }^{2}}\theta +{{\sin }^{2}}\beta \]

\[{{\sin }^{2}}\theta +{{\cos }^{2}}\beta \]

\[{{\cos }^{2}}\theta +{{\sin }^{2}}\beta \]

If \[{{\sin }^{-1}}x=\theta +\beta \]and \[{{\sin }^{-1}}y=\theta -\be

1.	If \[{{\sin }^{-1}}x=\theta +\beta \]and \[{{\sin }^{-1}}y=\theta -\beta ,\]then \[1+xy=\]
A.	\[{{\sin }^{2}}\theta +{{\sin }^{2}}\beta \]
B.	\[{{\sin }^{2}}\theta +{{\cos }^{2}}\beta \]
C.	\[{{\cos }^{2}}\theta +{{\cos }^{2}}\beta \]
D.	\[{{\cos }^{2}}\theta +{{\sin }^{2}}\beta \]
Answer» C. \[{{\cos }^{2}}\theta +{{\cos }^{2}}\beta \]

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If \[{{\sin }^{-1}}x=\theta +\beta \]and \[{{\sin }^{-1}}y=\theta -\beta ,\]then \[1+xy=\]

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