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JEE MATHEMATICS MCQ: INVERSE TRIGONOMETRY

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Which of the following is the principal value branch of cosec⁡−1x\operatorname{cosec}^{-1} \mathrm{x} ?
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Correct option: D
[−π2,π2]−{0}\left[\frac{-\pi}{2}, \frac{\pi}{2}\right]-\{0\}
Option D ([−π2,π2]−{0}\left[\frac{{-\pi}}{{2}}, \frac{{\pi}}{{2}}\right] - \{0\}) is correct because the principal value branch of cosec⁡−1x\operatorname{cosec}^{-1} x is [−π2,π2]−{0}\left[\frac{{-\pi}}{{2}}, \frac{{\pi}}{{2}}\right] - \{0\}.

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