Trig Do Now

1
Trig - Do Now

• Read p. 2-5 in the textbook while I come around
  and check your HW and materials
• Prepare questions for me from HW

2
Objectives

• Appendix C (Review)
• Relations and Functions
• What makes a mathematical relation a function?
• Domain and Range
• What do we do if a function can only handle (or
  give) certain values?
• How do we express any restrictions?

• NJCCCS 4.3.12.B.2, 4.2.12.A.3

3
Objectives

• 1.1 Angles
• Basic Terminology
• What is an angle and how is it formed?
• What is a negative angle?
• Degree Measure
• What units can we use to measure angles?
• What are some special classifications of angles?
• How do we convert from degrees, minutes, and
  seconds to decimal degrees and vice versa?

• NJCCCS 4.3.12.B.2, 4.2.12.A.3

4
Review HW
5
Basic Terms

• Line
• Line Segment
• Ray

6
Basic Terms

• Angle
• Initial Side
• Terminal Side
• Vertex
• Standard Position
• Positive angle
• Negative angle

7
Degree Measure

• Babylonians 360
• How many degree is a complete rotation? ¼ of a
  rotation? 2/3 of a rotation?
• Angle types (name them!)

8
Degree Measure

• Angle relationships
• Complementary
• Supplementary
• Solving problems involving comp. supp. angles
• p.3 Example 1

9
Degree, Minutes, Seconds

• One minute is 1/60 of a degree.
• One second is 1/60 of a minute.

• Used in navigation

10
Example Calculations

• Perform the calculation.
• Since 86 is 26 more than 60, the answer is
  written as
• 5426

11
Example Calculations

• Perform the calculation.
• Write

12
Example Conversions

• Convert

13
Example Conversions

• Convert 34.624?

14
Homework

• p. 6-7 1-4, 5, 11, 12, 13, 15, 17, 19, 20, 23,
  25, 27, 31, 33, 37 (due Thur)