cos ""(2pi)/( 15) cos ""(4pi)/(15) cos "...

`cos ""(2pi)/( 15) cos ""(4pi)/(15) cos ""(8pi)/(15) cos ""(16pi)/(15)=`

A

`1//2`

B

`1//4`

C

`1//8`

D

`1//16`

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The correct Answer is:

D

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