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If cos(A-B)=3/5 and tanAtanB=2 then...

If `cos(A-B)=3/5` and `tanAtanB=2` then

A

`cos A cos B=1/5`

B

`sin A sin B = -2/5`

C

`cos A cos B =-1/5`

D

` sin A sin B =-1/5`

Text Solution

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A
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