POINT OF INTEREST 4 - THE LAW OF SINES
Copyright by Ingrid Stewart, Ph.D. Please Send Questions and Comments to firstname.lastname@example.org.
Proof of the Law of Sines
Let h be the altitude in the triangle above. Then you have
Equating these two values of h, you have or .
By constructing an altitude from vertex B to side AC, you can show in a similar manner that