If alpha,beta,gammain[0,pi] and alpha,be...

If `alpha,beta,gammain[0,pi] and alpha,beta,gamma` are in AP, then `(sinalpha-singamma)/(cosgamma-cosalpha)` is equal to

A

`sin beta`

B

` cos beta `

C

`cot beta`

D

`2 cos beta`

Verified by Experts

The correct Answer is:

C

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