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Let a , ba n dc detnote the sides B C ,C...

Let `a , ba n dc` detnote the sides `B C ,C Aa n dA B` respectively of ` A B Cdot` If `|1a b1c a1b c|=0`

A

`9/4`

B

`4/9`

C

`1`

D

`3sqrt3`

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The correct Answer is:
A
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