If alpha,beta in (0, pi/2),"sin" alpha=4...

If `alpha,beta in (0, pi/2),"sin" alpha=4/5`and `"cos"(alpha+beta)=-12/13`, then `"sin" beta` is equal to

A

`63/65`

B

`61/65`

C

`3/5`

D

`5/13`

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The correct Answer is:

A

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