We can use the Pythagorean theorem or SOHCAHTOA to solve for missing sides and angles of RIGHT triangles. What happens when we don't have a right triangle? We use the law of sines! The law of sines says that a/sinA = b/sinB = c/sinC. We typically only use one proportion at a time.
To use the law of sines, you must be given two angles and a side. Two sides and an angle doesn't work. First, find the third missing angle by subtracting your two given angles from 180, because there are 180 degrees in every triangle. Then, use the law of sines to create proportions to solve for your missing sides!
To see a video example of how to do this, click the link below:
http://www.educreations.com/lesson/view/law-of-sines/14387213/?s=9doa0j&ref=app
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