Question 436471: for triangle abc, with side lengths 2.5ft, 2ft, and 3ft. What is the angle of a, b, and c
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Use the Cosine Law to find one of the angles, or 2 if you prefer.
Once you know 2, then subtract their sum from 180 degs.
To find a 2nd angle, you can use either the Cosine Law, or the Law of Sines.
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If you have a lot of these to do, you can make an Excel sheet.
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