Sections:

Law of Sines and Law of Cosines, Page 2

Law of Sines

If you are given triangle ABC (triangle ABC : 

5.2.2 graphic 1

The Law of Sines states:

a over sine of A equals b over sine of B equals c over sine of C

The Law of Sines is used when you know two angles and the included side, or if you know two angles and a non-included side. Remember: Angle-Side-Angle (ASA) and Angle-Angle-Side (AAS) form unique triangles.