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Find the value of sin""(9pi)/(14).sin""(...

Find the value of `sin""(9pi)/(14).sin""(11pi)/(14)sin""(13pi)/(14)`

A

`(1)/(64)`

B

`-(1)/(64)`

C

`(1)/(8)`

D

`-(1)/(8)`

Text Solution

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The correct Answer is:
C
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