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[" Bisectors of angles "A,B" and "C" of a triangle "ABC" intersect its circumcircle at "D,E" and "],[" Frespectively.Prove that the angles of the triangle DEF are "90^(@)-(1)/(2)A,90^(@)-(1)/(2)B" and "],[90^(@)-(1)/(2)C" ."]

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