CBSE 2026 · Region 5 · Set 1 · Q3 · 1 mark
For the inverse trigonometric functions, which of the following Principal Value Branch is not correctly defined ?
Official answer
From CBSE’s own marking scheme for this paper.
(D)
$\displaystyle \operatorname{cosec}^{-1}: \mathrm{R}-(-1,1) \rightarrow\left[-\frac{\pi}{2}, \frac{\pi}{2}\right]$
Inverse Trigonometric FunctionsProperties of Inverse Trigonometric FunctionsUnderstandmcqmedium
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CBSE Class 12 Mathematics past-paper question from the 2026board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.