Question

Given CO bisects ZDON. What
is the measure of minor arc MA?

Answer 1

from figure angle(DON)=90 and CO bisects it. so angle(COD)=90/2=45 degree=45pi/180 rad=pi/4 rad so arc(MA)=r*pi/4 where r=radius of circle=OA so arc(MA)=(OA)pi/4