If 2tan""(alpha)/(2) = tan ""(beta)/(2),...

If `2tan""(alpha)/(2) = tan ""(beta)/(2)`, then `(3+5cosbeta)/(5+3cosbeta)` is equal to :

A

`cosalpha`

B

`cosbeta`

C

`sinalpha`

D

`sinbeta`

Verified by Experts

The correct Answer is:

A

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