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If tan ((A -B)/( 2)) = (1)/(3) tan ((A+...

If tan `((A -B)/( 2)) = (1)/(3) tan ((A+B)/( 2)) ` then a : b is

A

` 2: 1 `

B

` 3: 1`

C

` 4: 1`

D

` 1: 3`

Text Solution

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The correct Answer is:
A
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