College Math Survey: 3.3 The Unit Circle Worksheet With Answers
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3College Math Survey
Mathematician:
3.3 The Unit Circle
Notes 10.20.14
RADIAN vs DEGREE
Why these values?
Special Right Triangles
Convert to Radians
Convert to Radians
30
0
o
o
30
45
o
o
o
30
-60
-90
o
60
Convert to Degrees
Convert to Degrees
o
45
o
o
o
45
-45
-90
2
3
o
45
We are now going to connect these ideas to a unit circle.
o
What would the coordinate of a 30
angle be?
Image
Normally
On a Unit Circle
Coordinate (x, y)
Radian Value
Y =
x =
o
What would the coordinate of a 60
angle be?
Image
Normally
On a Unit Circle
Coordinate (x, y)
Radian Value
Y =
x =
o
What would the coordinate of a 45
angle be?
Image
Normally
On a Unit Circle
Coordinate (x, y)
Radian Value
Y =
x =
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