8.2-Law of the Cosines 3 2 1 Law of the Cosines & Requirements Area of Triangles Practice Problems
Feb 15, 2016
8.2-Law of the Cosines
3
2
1Law of the Cosines & Requirements
Area of Triangles
Practice Problems
2
Law of the Cosines
3
Law of the Cosines Requirements
Two sides and an angle between them SAS
Three sides SSS
If these conditions are not met, the problem cannot be solved with the Law of the Cosines
4
SAS Example
5
SAS Example (Cont.)
6
SSS Example
7
SSS Example (Cont.)
2510748180
8
Area of a Triangle
9
Area of a Triangle Example
10
Heron’s Formula
11
Heron’s Formula Example
12
Practice Problems Page 587
Problems 5-14, 16-18, 22