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CBSE XII
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Math
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Inverse Trigonometric Functions
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Q)
If $|\;x\;|\leq 1,then\;2\tan^{-1}x+\sin^{-1}\frac{2x}{1+x^2}$ is equal to:
\[(A)\quad4\tan^{-1}x\quad(B)\quad 0\quad(C)\quad\frac{1}{2}\quad(D)\quad \pi\]
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