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Given that cos ((alpha -beta)/(2)) = 2 c...

Given that `cos ((alpha -beta)/(2)) = 2 cos ((alpha+ beta)/(2)),` then ` tan ""(alpha)/(2) tan ""(beta)/(2)` is equal to ...........A) `1/2` B) `1/3` C) `1/4` D) `1/8`

A

`1/2`

B

`1/3`

C

`1/4`

D

`1/8`

Text Solution

Verified by Experts

The correct Answer is:
B
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