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If the equations ax2+2bx+3c=0and 3x2+8x+15=0 have a common root where a,b,c, are lengths of sides of ABC then sin2 A + sin2 B + sin2 C=

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If the equations ax2+2bx+3c=0and 3x2+8x+15=0 have a common root where a,b,c, are lengths of sides of ABC then sin2 A + sin2 B + sin2 C=




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