December 3rd, 2013, 03:39 AM  #1 
Senior Member Joined: Nov 2013 Posts: 434 Thanks: 8  circle
AB is Diameter in circle M H and D belongs to the Arc AB H belongs to Arc BD N point belongs to line segment A M m( BMH)=40 dgree m(MHN)=m(MDN)=10 dgree find m(of Arc AD) 
December 3rd, 2013, 08:32 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 21,036 Thanks: 2274 
If M is the circle's center, the required angle is 20°.


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