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The value of cos(pi/15)cos(2pi/15)cos(3p...

The value of `cos(pi/15)cos(2pi/15)cos(3pi/15)cos(4pi/15)cos(5pi/15)cos(6pi/15)cos(7pi/15)` is eqaul to

A

`1/2^6`

B

`1/2^7`

C

`1/2^8`

D

none of these

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The correct Answer is:
B
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PATHFINDER-TRIGONOMETRIC RATIOS AND IDENTITIES-QUESTION BANK
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  2. If tantheta=(sin alpha-cos alpha)/(sinalpha+cosalpha)1 then

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  4. The value of cos((2pi)/7)cos((4pi)/7)cos((6pi)/7) is

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  7. If Pn=sin^ntheta+cos^ntheta where n in W (whole number)and theta in R ...

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  8. If Pn=sin^ntheta+cos^ntheta where n in W (whole number)and theta in R ...

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  9. if f(theta)=acostheta+bsintheta then -sqrt(a^2+b^2)lef(theta)lesqrt(a^...

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  10. if f(theta)=acostheta+bsintheta then -sqrt(a^2+b^2)lef(theta)lesqrt(a^...

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