Trigonometry
Precalculus
Chapter 4
,› This Slideshow was developed to accompany the text
› Precalculus
› By Richard Wright
› https://www.andrews.edu/~rwright/Precalculus-RL
xt/TOC.html
› Some examples and diagrams are taken from the text
Slides created by
Richard Wright, Andrews Academ
,4-01 Angle
Measures
In this section, you will:
• Draw angles in standard position.
• Convert between degrees and radians.
• Find coterminal angles.
• Use applications of angles.
, 4-01 Angle Measures
› Angles in standard position
› Vertex at origin
› Initial side on positive x-
axis
› Terminal side rotates
counterclockwise
Precalculus
Chapter 4
,› This Slideshow was developed to accompany the text
› Precalculus
› By Richard Wright
› https://www.andrews.edu/~rwright/Precalculus-RL
xt/TOC.html
› Some examples and diagrams are taken from the text
Slides created by
Richard Wright, Andrews Academ
,4-01 Angle
Measures
In this section, you will:
• Draw angles in standard position.
• Convert between degrees and radians.
• Find coterminal angles.
• Use applications of angles.
, 4-01 Angle Measures
› Angles in standard position
› Vertex at origin
› Initial side on positive x-
axis
› Terminal side rotates
counterclockwise