If \[{{\sin }^{-1}}(x-1)+co{{s}^{-1}}(x-3)+ta{{n}^{-1}}\left( \frac{x}{2-{{x}^{2}}} \right)\]\[={{\cos }^{-1}}k+\pi ,\] Then the value of k is

If \[{{\sin }^{-1}}(x-1)+co{{s}^{-1}}(x-3)+ta{{n}^{-1}}\left( \frac{x}

1.	If \[{{\sin }^{-1}}(x-1)+co{{s}^{-1}}(x-3)+ta{{n}^{-1}}\left( \frac{x}{2-{{x}^{2}}} \right)\]\[={{\cos }^{-1}}k+\pi ,\] Then the value of k is
A.	1
B.	\[-\frac{1}{\sqrt{2}}\]
C.	\[\frac{1}{\sqrt{2}}\]
D.	None of these
Answer» D. None of these

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If \[{{\sin }^{-1}}(x-1)+co{{s}^{-1}}(x-3)+ta{{n}^{-1}}\left( \frac{x}{2-{{x}^{2}}} \right)\]\[={{\cos }^{-1}}k+\pi ,\] Then the value of k is

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