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If tanA,tanB,tanC are the roots of the equation x3−3x2−2x+1=0, then the value of sin2(A+B+C)+sin(A+B+C)cos(A+B+C) is |
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Answer» If tanA,tanB,tanC are the roots of the equation x3−3x2−2x+1=0, then the value of sin2(A+B+C)+sin(A+B+C)cos(A+B+C) is |
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