\( \sin \cot ^{-1} \tan \cos ^{-1} x \) is equal to (a) \( x \) (b) \( \sqrt{1-\mathrm{x}^{2}} \...

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\( \sin \cot ^{-1} \tan \cos ^{-1} x \) is equal to
(a) \( x \)
(b) \( \sqrt{1-\mathrm{x}^{2}} \)
(c) \( \frac{1}{x} \)
(d) none of these
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