cos 20^@ cos 40^@ cos 60^@ cos 80^@ का म...

`cos 20^@ cos 40^@ cos 60^@ cos 80^@` का मान है

A

`(3)/(16)`

B

`(1)/(16)`

C

`(sqrt3)/(16)`

D

`1/2`

लिखित उत्तर

Verified by Experts

The correct Answer is:

B

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