Integrated Math 4
Day 57
Chapter 14 Test Review

Daily Openers

Go over and collect homework
Chapter 14 Test Review
Section 14.1 – Trigonometric Ratios
Section 14.2 – Solving Right s
 Solving a  means finding all 3 angle measures and all 3 side lengths.
solving a triangle – finding all the angle measures and side lengths of a triangle.
 To solve a Right Triangle → use trigonometric functions
Section 14.3 – Solving Oblique s (LAW OF SINES)
oblique triangle – triangles that have no right angles.
 To solve an oblique triangle → you need to know a side and at least 2 other parts
Law of Sines
A-A-S, A-S-A, and S-S-A
LAW OF SINES
If ABC is a triangle with sides a, b, and c, then
a
b
c


sin A sin B sin C
or
sin A sin B sin C


a
b
c
Section 14.4 – Solving Oblique s (LAW OF COSINES)
Law of Cosines
S-S-S and S-A-S
LAW OF COSINES
Let ABC be a triangle with sides a, b, and c, then:
Standard Form
Alternative Form
a 2  b 2  c 2  2bc cos A
cos A 
b 2  a 2  c 2  2ac cos B
c 2  a 2  b 2  2ab cos C
b2  c2  a2
2bc
2
a  c2  b2
cos B 
2ac
2
a  b2  c2
cos C 
2ab
Homework – Practice Test Worksheets
Daily Openers – 1. page 623 #29
2. page 623 #31, 32
3. page 623 #33
4. page 623 #34
5. page 623 #1