March 10th, 2017, 09:29 AM  #11 
Senior Member Joined: Sep 2015 From: CA Posts: 925 Thanks: 499  
March 10th, 2017, 10:26 AM  #12 
Global Moderator Joined: Dec 2006 Posts: 16,595 Thanks: 1199 
My first post in this thread hasn't been answered by TotalMathMan, and I like to give the first person who answers (yourself in this instance) a chance to improve their answer.

March 12th, 2017, 06:31 AM  #13 
Global Moderator Joined: Dec 2006 Posts: 16,595 Thanks: 1199 
There are various ways to do the problem. I would use c = a*cos(B) + b*cos(A).


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