In a triangle ABC, D is the midpoint of BC. Join AD. Angle ADB = 45 degree and angle ACB = 30 degree. Find angle ABC.
(In reply to
re: An algebraic solution by Richard)
Thank you for pointing out my error. I've corrected my post. I did mean to say "Let CD = DB = 1".  It turns out I also had misnamed one of my angles.... pretty sloppy.

Posted by Eric
on 20060226 13:46:53 