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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 1 · Set 1 · Q1
If 2 cos^-1 x= y, then
If $\displaystyle 2 \cos ^{-1} x=\mathrm{y}$, then
Official answer
(C)
$\displaystyle 0 \leq \mathrm{y} \leq 2 \pi$
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CBSE Class 12 Mathematics past-paper question from the 2026 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.