\[\sin \left( \frac{\pi }{10} \right)\sin \left( \frac{3\pi }{10} \right)=\] [MNR 1984]

\[\sin \left( \frac{\pi }{10} \right)\sin \left( \frac{3\pi }{10} \rig

1.	\[\sin \left( \frac{\pi }{10} \right)\sin \left( \frac{3\pi }{10} \right)=\] [MNR 1984]
A.	44228
B.	-0.5
C.	44287
D.	1
Answer» D. 1

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\[\sin \left( \frac{\pi }{10} \right)\sin \left( \frac{3\pi }{10} \right)=\] [MNR 1984]

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