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If cos(alpha+beta)=3/5, sin(alpha-beta)=...

If `cos(alpha+beta)=3/5, sin(alpha-beta)=5/13`, and `0 lt alpha, beta lt pi/4`, then `tan(2alpha)` is equal to:

A

`21/16`

B

`63/52`

C

`33/52`

D

`63/16`

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