Review Law of S and C.notebook
April 11, 2017
Apr 11­8:11 AM
Apr 11­8:26 AM
1
Review Law of S and C.notebook
April 11, 2017
Law of Sines and Law of Cosines
C
b
SinA=SinB=SinC
c
a
b
A
a
B
c
Law of Cosines
When you are given two sides and an angle***
C
b
a2=b2+c2­2bccosA
a
b2=a2+c2­2accosB
2
2
A
c
B
2
c =a +b ­2abcosC
Apr 7­12:52 PM
Use laws when you DO NOT have a right triangle
.
Apr 7­12:54 PM
2
Review Law of S and C.notebook
April 11, 2017
Ambiguous case
Apr 7­12:55 PM
Homework Pg 739 1­11 all
Apr 7­1:33 PM
3