Mathematics Describing the Real World: Precalculus and Trigonometry

Law of Cosines (1x22)

Air date: Jun 16, 2011

Given three sides of a triangle, can you find the three angles? Use a generalized form of the Pythagorean theorem called the law of cosines to succeed. This formula also allows the determination of all sides and angles of a triangle when you know any two sides and their included angle.