Mathematical Proofs: The Cosine Rule

Mathematical Proofs: The Cosine Rule

How many times have your teacher given you a formula to use in class? How many times have you wondered where it came from? Here I will show you one of the most fantastic formula used in Mathematics! The Cosine Rule. A step by step guide as to how the Cosine rule was derived. Feel free to rewind as well as the video and learn how to prove the Cosine rule. Enjoy!!