If cos(alpha+beta)=4/5; sin(alpha-beta)=...

If `cos(alpha+beta)=4/5; sin(alpha-beta)=5/13` and `alpha,beta` lie between `0&pi/4` then find the value of `tan2alpha`

A

`(16)/(63)`

B

`(56)/(33)`

C

`(28)/(33)`

D

None of these

Verified by Experts

The correct Answer is:

B

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