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-- Mathematics - Section B1
Definite Integration
$\int\limits_0^{\frac{\pi}{2}} \sin ^2 x d x$ is equal to:
$\frac{\pi}{4}$
$\frac{\pi}{2}$
$\frac{\pi}{3}$
$\pi$
The correct answer is Option (1) → $\frac{\pi}{4}$