If \[4{{\sin }^{-1}}x+{{\cos }^{-1}}x=\pi ,\]then\[x\]is equal to [UPSEAT 2001]

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

1.	If \[4{{\sin }^{-1}}x+{{\cos }^{-1}}x=\pi ,\]then\[x\]is equal to [UPSEAT 2001]
A.	0
B.	\[\frac{1}{2}\]
C.	\[-\frac{\sqrt{3}}{2}\]
D.	\[\frac{1}{\sqrt{2}}\]
Answer» C. \[-\frac{\sqrt{3}}{2}\]

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If \[4{{\sin }^{-1}}x+{{\cos }^{-1}}x=\pi ,\]then\[x\]is equal to [UPSEAT 2001]

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