$\int_0^{\pi / 2} \sqrt{\sin \theta} \cos ^3 \theta d \theta$ is equal to - DASH

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Question

$\int_0^{\pi / 2} \sqrt{\sin \theta} \cos ^3 \theta d \theta$ is equal to

$\frac{8}{23}$

$\frac{7}{23}$

$\frac{8}{21}$

$\frac{7}{21}$

Solution

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