Online Course Discussion Forum
Need help on winter campus blue geometry practice P19-21
Get stuck in solving these problems. Please help !
Thanks a lot, Professor! I will try to follow your hints and see if I am able to solve the problems myself.
Happy New year!
For 21, I have found cos(B/2) = ((a+c)^2 - b(b-a))/(2a)(b+c), however, I am not sure where to go from here. It seems any other calculation I do ends up in a messy equation. Can you provide some help?