In [math]\bigodot{A}[/math], [math]m\angle BAC=57°[/math]. What is [math]m\widehat{BDC}[/math]?

[list=1][br][*]Find the measure of [math]\widehat{BC}[/math].[br][*]Find the measure of [math]\widehat{BDC}[/math].[br][*]State your conclusion.[br][/list][br][br]This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit www.walch.com for more information.