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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 5 · Set 1 · Q10
∫ 1/(√(1+ cos 2 x)) dx is equal to:
$\displaystyle \int \frac{1}{\sqrt{1+\cos 2 \mathrm{x}}} \mathrm{dx}$ is equal to :
Official answer
(B)
$\displaystyle \frac{1}{\sqrt{2}} \log |\sec \mathrm{x}+\tan \mathrm{x}|+\mathrm{C}$
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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.