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If alpha, beta, gamma in [0, pi]"and if"...

If `alpha, beta, gamma in [0, pi]"and if" alpha, beta, gamma` are in AP, then
`(sin alpha - sin gamma)/(cos gamma - cos alpha)` is equal to

A

`sin beta`

B

`cos beta`

C

`cot beta`

D

`2 cos beta`

Text Solution

Verified by Experts

The correct Answer is:
C
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