9-4 - 9­4.notebook November 19, 2010 9­4 Law of Cosines...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 9­4.notebook November 19, 2010 9­4 Law of Cosines In triangle ABC, 2 2 2 c = a + b ­ 2ab cos C 2 2 2 a = b + c ­ 2bc cos A 2 2 2 b = a + c ­2ac cos B Mar 26­8:15 AM Ex. 1 Suppose that two sides of a triangle have lengths 3cm and 7cm and the angle between them measures 1300. Find length of third side. Mar 26­8:20 AM 1 9­4.notebook November 19, 2010 Ex. 2 The lengths of the sides of a triangle are 5, 10 and 12. Solve the triangle. Mar 26­8:22 AM Ex. 3 In the diagram, AB = 5, BD = 2, DC = 4 and CA = 7. Find AD A B D C Mar 26­8:24 AM 2 9­4.notebook November 19, 2010 H.W. p.352 class exercises 4,5 p. 352 written 1­8 p. 353 9­14, 16 Q.A. # 4 pp. 355­356 1­15 All Mar 27­9:11 AM 3 ...
View Full Document

This note was uploaded on 04/22/2011 for the course MATH 212 taught by Professor Owens during the Winter '07 term at Grand Valley State University.

Ask a homework question - tutors are online