\[\int_{0}^{\pi /4}{{{\sec }^{7}}\theta {{\sin }^{3}}\theta }\,d\theta

1.	\[\int_{0}^{\pi /4}{{{\sec }^{7}}\theta {{\sin }^{3}}\theta }\,d\theta =\]
A.	\[\frac{1}{12}\]
B.	\[\frac{3}{12}\]
C.	\[\frac{5}{12}\]
D.	None of these
Answer» D. None of these

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\[\int_{0}^{\pi /4}{{{\sec }^{7}}\theta {{\sin }^{3}}\theta }\,d\theta =\]

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