Offline paper
Mathematics · 2014
JEE Main 2014 · 2014-04-06 Offline · Q75
The integral ∫_0^π √(1+4 sin^2 x/2-4 sin x/2) d x equals:
The integral
$$\int_0^\pi \sqrt{1+4 \sin ^2 \frac{x}{2}-4 \sin \frac{x}{2}} \mathrm{~d} x \text { equals : }
$$
Official answer
(2)
$\displaystyle 4 \sqrt{3}-4-\frac{\pi}{3}$
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JEE Main 2014 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.