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March 14th, 2014, 07:08 AM  #1 
Newbie Joined: Mar 2014 Posts: 1 Thanks: 0  How to solve this please
Please can you help solve this?

March 14th, 2014, 09:03 AM  #2 
Global Moderator Joined: Dec 2006 Posts: 20,831 Thanks: 2160  Re: How to solve this pleas
If A and B are on the same side of a vertical line through D, angle ADB = (84  67)° = 17°. Hence required angle = angle ACB = angle ADB = 17°. 