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Mathematics · 2026 · 1 mark
CBSE 2026 · Region 5 · Set 3 · Q10
∫ √((1+ cos x)/(1- cos x)) dx is equal to:
$\displaystyle \int \sqrt{\frac{1+\cos \mathrm{x}}{1-\cos \mathrm{x}}} \mathrm{dx}$ is equal to :
Official answer
(A)
$\displaystyle 2 \log \left|\sin \frac{\mathrm{x}}{2}\right|+\mathrm{C}$
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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.