Question 1091279

If you are given 3 sides of a triangle, explain how you would find all three angles?  
<pre>With sides being a, b, and c, use Law of Cosines, as follows: {{{highlight_green(matrix(3,6, a^2, "=", b^2 + c^2 - 2bc * cos (A), for, angle, A, b^2, "=", a^2 + c^2 - 2ac * cos (B), for, angle, B, c^2, "=", a^2 + b^2 - 2ab * cos (C), for, angle, C))}}}