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

If `cos (alpha+beta)=(4)/(5), sin (alpha-beta)=(5)/(13)` and `0 lt alpha, beta lt (pi)/(2)` then `cos 2 alpha=`

A

`(25)/(16)`

B

`(33)/(65)`

C

`(19)/(12)`

D

`(20)/(7)`

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