If tan A =frac(15)(8) and tan B = frac ...

If `tan A =frac(15)(8)` and `tan B = frac (7)(24)` then `cos(A - B) =`?
A)`frac(297)(4215)`
B)`frac(304)(425)`
C)`frac(87)(425)`
D)`frac(416)(425)`

A

`frac(297)(4215)`

B

`frac(304)(425)`

C

`frac(87)(425)`

D

`frac(416)(425)`

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