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(2): An algebraic solution
The devil is in the details, they say! Also, all's well that ends well.
The similar triangle approach using only the 30-60-90 and 45-45-90
triangle side ratios is quite basic and renders this problem more
interesting than many who rated it seem to think.
Edited on February 27, 2006, 9:32 pm
Posted by Richard
on 2006-02-26 14:04:15