sin(tan−1x),|x|<1, is equal to a) x√1−x2 b) 1√1−x2 c) 1√1+ – InterviewSolution

1.	sin(tan−1x),\|x\|<1, is equal to a) x√1−x2 b) 1√1−x2 c) 1√1+x2 d) x√1+x2
Answer» $s i n (t a n^{- 1} x), \| x \| < 1$ , is equal to a) $\frac{x}{\sqrt{1 - x^{2}}}$ b) $\frac{1}{\sqrt{1 - x^{2}}}$ c) $\frac{1}{\sqrt{1 + x^{2}}}$ d) $\frac{x}{\sqrt{1 + x^{2}}}$

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