Joel's SAS Formula

Goal: find all the angles and sides of an SAS triangle using only the Law of Sines.


to play around with it in the Geometer's Sketchpad.


This differs from the formula at the top because 180° needs to be added when the value is negative because tan
LaTeX: A=(tan^{-1}(\frac{sinB}{\frac{c}{a}-cosB})+180°) \bmod 180° in any triangle ABC.


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