1.

\[\sin [{{\cot }^{-1}}(\cos {{\tan }^{-1}}x)]\]=

A. \[\frac{x}{\sqrt{{{x}^{2}}+2}}\]
B. \[\frac{x}{\sqrt{{{x}^{2}}+1}}\]
C. \[\frac{1}{\sqrt{{{x}^{2}}+2}}\]
D. \[\sqrt{\frac{{{x}^{2}}+1}{{{x}^{2}}+2}}\]
Answer» E.


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