1. The problem statement, all variables and given/known data [PLAIN]http://img28.imageshack.us/img28/1046/mathproblemp.jpg [Broken] 2. Relevant equations Law of Cosines 3. The attempt at a solution I'm not really sure what to do for this problem, it looks easy but I can't figure it out. I tried # 11 and was able to find d. d2=a2+b2-2(a)(b)cos(30) d=3.23 However, I don't know where to go from there.