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sin""(theta )/(2)* sin""(7 theta )/(2) +...

`sin""(theta )/(2)* sin""(7 theta )/(2) + sin""(3theta )/(2) * sin""(11 theta )/(2) - sin 2 theta sin 5 theta =`

A

0

B

1

C

`-1`

D

2

Text Solution

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The correct Answer is:
A
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