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The value of cos "" (2pi)/(15) cos "" (4...

The value of `cos "" (2pi)/(15) cos "" (4pi)/(15) cos "" (8pi)/(15) cos "" (14pi)/(15) ` is

A

`1/16`

B

`1/8`

C

`1/12`

D

`1/4`

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A
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