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If cos(A-B) = 3/5 and tanA.tanB=2, then...

If `cos(A-B) = 3/5` and tanA.tanB=2, then

A

cosA.cosB`=1/5`

B

`cosA.cosB=-1/5`

C

`sinA.sinB=-6/5`

D

`sinA.sinB=-1/5`

Text Solution

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The correct Answer is:
C
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