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If A+B+C=pi then |(sin^(2)A,cotA,1),(sin...

If `A+B+C=pi` then `|(sin^(2)A,cotA,1),(sin^(2)B,cotB,1),(sin^(2)C,cotC,1)|=`

A

0

B

1

C

`-1`

D

2

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