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

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

A

`cos alpha`

B

`cos beta`

C

`sin alpha`

D

`sin beta`

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The correct Answer is:
A
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