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[" 72.In a triangle "ABC,D" is a point o...

[" 72.In a triangle "ABC,D" is a point on "BC" such that "AD" is the "],[" intermal bisector of "/_A" .Let "/_B=2/_C" and "CD=AB" ."],[" Then "/_A" is "],[[" (a) "18^(@)," (b) "36^(@)],[" (c) "54^(@)," (d) "72^(@)]]

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