# Law of Sines

The **Laws of Sines and Cosines**. The **Law of Sines** establishes a relationship between the angles and the side lengths of ?ABC: a/sin(A) = b/sin(B) = c/sin(C).

**Laws of Sines and Cosines**. The **Law of Sines** establishes a relationship between the angles and the side lengths of ?ABC: a/sin(A) = b/sin(B) = c/sin(C).