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If cosx-sinalphacotbetasinx=cosa , then ...

If `cosx-sinalphacotbetasinx=cosa ,` then the value of `tan(x/2)` is `-tan(alpha/2)cot(beta/2)` (b) `tan(alpha/2)tan(beta/2)` `-cot((alphabeta)/2)tan(beta/2)` (d) `cot(alpha/2)cot(beta/2)`

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`

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The correct Answer is:
B, C
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