Trigonometric identities : Law of cosines

By Sal Khan

Book Id: WPLBN0002825738
Format Type: Video (Educational Video)
File Size:
Reproduction Date: 2012

Title:	Trigonometric identities : Law of cosines
Author:	Sal Khan
Volume:	Trigonometry and precalculus series
Language:	English
Subject:	Math, Trig identities and examples, Trigonometry and precalculus
Collections:	Educational Videos, Trigonometric identities series
Historic Publication Date:
Publisher:	Khan Academy

Member Page:	Khan Academy
Citation APA MLA Chicago Khan, S. (n.d.). Trigonometric identities : Law of cosines. Retrieved from http://www.self.gutenberg.org/

Description
Introduction to the law of cosines to solve for a side of a triangle when 2 sides and an angle are known.

Summary
Videos and exercises on trigonometry. Watch the Geometry playlist first if you have trouble understanding the topics covered here.

Excerpt
If you're starting to sense that there may be more to trig functions than meet the eye, you are sensing right. In this tutorial you'll discover exciting and beautiful and elegant and hilarious relationships between our favorite trig functions (and maybe a

Table of Contents
trigonometry, math, law, of, cosines