Warm up
Use the theorems for special right triangles to find the missing side lengths
in the triangles above.
Chapter 4
Understanding Trigonometric
Functions
- Exploring Angle Measure
and the unit Circle (First
Quadrant)
Language Objectives: We will exploring angle measure and the unit
circle by do worksheet 11B
Converting Between Degree Measure and Radian Measure
Examples
There is another way to state the size of an angle
In a full circle there are 360 degrees.
Each degree is split up into 60 parts, each part being
1/60 of a degree. These parts are called minutes.
Each minute is split up into 60 parts, each part being
1/60 of a minute. These parts are called seconds.
Exit directions 
Do: Work with classmate complete the Worksheet 11B.
Put: In box No. 3
Finish By: 10.40
When done do: Find other proofs of the Pythagorean
Theorem.