The domain of is

MATHEMATICS · Single correct · CBSE · Mathematics · Inverse Trigonometric Functions · Inverse Trigonometric Functions

Problem

The domain of f(x)=cos⁡−1x+cot⁡−1x+csc⁡−1xf(x)=\cos^{-1}x+\cot^{-1}x+\csc^{-1}x is (a) [−1,1][-1,1] (b) R\mathbb{R} (c) (−∞,−1]∪[1,∞)(-\infty,-1]\cup[1,\infty) (d) {−1,1}\{-1,1\}

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