Unit Circle Flashcards
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Last updated 7:06 PM on 4/4/26
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16 Terms
1
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Positive angles rotate
Counter-clockwise
2
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Negative angles rotate
Clockwise
3
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1 full revolution around the unit circle is _ degrees
360
4
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1 full revolution around the unit circle is _ radians
2pi
5
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Radians → Degrees:
multiple by 180/pi
6
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Degrees → Radians
Multiple by pi/180
7
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Sin(theta)
y/r
8
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Csc (theta)
r/y
9
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Cos (theta)
x/r
10
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Sec (theta)
r/x
11
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Tan (theta)
y/x
12
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Cot (theta)
x/y
13
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Cofunction of sin?
Csc
14
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Cofunction of cos?
Sec
15
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Cofunction of tan?
Cot
16
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Common Triples:
3,4,5
5,12,13
7,24,25
8,15,17
