You can put this solution on YOUR website! To solve triangles that are not right triangles,
like , you need to know at least the length of one side, and two more measurements (angles or sides).
You can use: ,
law of sines: , and
law of cosimes: .
If you have an angle and the opposite side (plus another angle or side), you would use law of sines.
If you do not have an angle/side pair opposite each other, you have no choice but to use law of cosines.