In the attached problem I need to solve for the unknown angle Beta. The book calls it a type IV problem and gives the procedure on how to solve for a type IV problem. I have tried to solve this problem but with no luck.
I have attached the problem, the procedures to solve for the type IV and the formulas and pictue of a type I figure. I would like to be able to solve this problem the way the book explains.
Please see attached file. I have used Pythagoras theorem and Cosine Rule.
If the common edge BC of two right angled triangles is considered unity, then
The solution solves for the angle beta in the given problem.