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

If `"cos"(pi)/(15) "cos"(2pi)/(15) "cos"(4pi)/(15)`
`"cos"(5pi)/(15) "cos"(7pi)/(15) "cos"(30pi)/(15) =x, " then " (1)/(8x) =`

A

4

B

`(1)/(4)`

C

8

D

`(4)/(3)`

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The correct Answer is:
A
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