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[" 01."quad " If for a triangle "ABC" ,"...

[" 01."quad " If for a triangle "ABC" ,"],[[1,a,b],[1,c,a,=0," then the value of "],[1,b,c]],[[sin^(2)A+sin^(2)B+sin^(2)C" is "],[,(a)(9)/(4)quad (b)(4)/(9)],[(3sqrt(3))/(2),(d)1]]

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