If tan {cos^(-1)((4)/(5))+tan^(-1)((2)...

If ` tan {cos^(-1)((4)/(5))+tan^(-1)((2)/(3))}=(a)/(b)`, where a and b are co-prime natural numbers, then:

A

`a+b=23`

B

`a-b=12`

C

`3b=a+2`

D

`2a=3b`

Verified by Experts

The correct Answer is:

A

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