What is the value of x that satisfies the equation\[{{\cos }^{-1}}x=2{

1.	What is the value of x that satisfies the equation\[{{\cos }^{-1}}x=2{{\sin }^{-1}}x\]?
A.	\[\frac{1}{2}\]
B.	\[-1\]
C.	\[1\]
D.	\[-\frac{1}{2}\]
Answer» B. \[-1\]

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What is the value of x that satisfies the equation\[{{\cos }^{-1}}x=2{{\sin }^{-1}}x\]?

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