Is there a way to find the angles of any triangle using only the lengths of the 3 sides?
by 
bigfatfrickinfarmer
ANSWERS: 3
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Yes, but it requires trigonometry. http://mathforum.org/library/drmath/view/54005.html
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yes it can be done.considering one of the angle as X find the different ratios of the sides and by using trigo formulas u can easily do it
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Yes, you use the cosine rule: a^2 = b^2 + c^2 - 2 b c cos A where a is the length of the side opposite the angle, A, you are trying to find. b and c are the lengths of the other two sides. Put in the numbers and solve the equation for A. These might also be helpful: b^2 = c^2 + a^2 - 2 c a cos B c^2 = a^2 + b^2 - 2 a b cos C (these are just the same rule repeated for the other two angles)
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