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If cos theta = (cos alpha - cos beta)/(1...

If `cos theta = (cos alpha - cos beta)/(1-cos alpha cos beta)`, then one of the values of `tan((theta)/(2))` is

A

`"Cot"beta/2 "Tan"alpha/2`

B

`"Tan"beta/2"Cot"alpha/2`

C

`"Tan"alpha" cot"beta/2`

D

`"Tan"^(2)alpha/2"Tan"^(2)beta/2`

Text Solution

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The correct Answer is:
A
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