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Let ABC be an isosceles triangle with AB=AC.Suppose that the bisector of angleB meets AC at D and that BC=AD+BD.Determine angleA

I found this question in a math olympiad question.BUT STILL DON'T KNOW HOW TO SOLVE

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Mohammed R. | Specialist in GED and College Prep MathSpecialist in GED and College Prep Math
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Wow.  How did you manage to get 10 votes? Impressive.