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The value of cos 20^(@) cos 40^(@)cos 60...

The value of `cos 20^(@) cos 40^(@)cos 60^(@) cos 80^(@)` is equal to

A

`1//4`

B

`1//8`

C

`1//16`

D

none

Text Solution

Verified by Experts

The correct Answer is:
C
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ML KHANNA-TRIGONOMETRY RATIOS AND IDENTITIES-PROBLEM SET (5) ( MULTIPLE CHOICE QUESTIONS)
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  3. The value of cos 20^(@) cos 40^(@)cos 60^(@) cos 80^(@) is equal to

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