Let a ,\ b and c denote the sides B C ,\...

Let `a ,\ b` and `c` denote the sides `B C ,\ C A` and `A B` respectively of ` A B C` . If `|1a b1c a1b c|=0,` then find the value of `sin^2A+sin^2B+sin^2C` .

`1/4`

`3/2`

`9/4`

`(3sqrt3)/2`

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