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Let alpha and beta be non-zero real num...

Let `alpha and beta ` be non-zero real numbers such that ` 2 ( cos beta - cos alpha) + cos alpha cos beta =1`. Then which of the following is/are true ?

A

`sqrt(3) tan (alpha/2)-tan(beta/2)=0`

B

`tan(alpha/2)-sqrt(3) tan (beta/2)=0`

C

`tan(alpha/2)-sqrt(3) tan (beta/2)=0`

D

`sqrt(3) tan (alpha/2)+tan (beta/2)=0`

Text Solution

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The correct Answer is:
B, C
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