Unit Circle Practice

Report
( 1 , √3 )
2 2 ( √2 , √2 )
60˚
2
2
45˚ ( √3 , 1 )
2
30˚ 2
Unit Circle
Use the Unit Circle to find
cos 135
Reference angle: 45
Coordinate: x
Sign: Answer: -√2
2
Use the Unit Circle to find
sin 315
Reference angle: 45
Coordinate: y
Sign: Answer: -√2
2
Use the Unit Circle to find
sin 180
Reference angle: none
Coordinate: y
Sign: N/A
Answer: 0
Use the Unit Circle to find
cos 210
Reference angle: 30
Coordinate: x
Sign: Answer: -√3
2
Use the Unit Circle to find
tan 225
Reference angle: 45
Coordinate: y/x
Sign: -/- = +
Answer: 1
Use the Unit Circle to find
sin 120
Reference angle: 60
Coordinate: y
Sign: +
Answer: √3
2
Use the Unit Circle to find
cos 120
Reference angle: 60
Coordinate: x
Sign: Answer: -1
2
Use the Unit Circle to find
tan 270
Reference angle: none
Coordinate: y/x
Sign: N/A
Answer: 1 = undefined
0
Use the Unit Circle to find
tan 360
Reference angle: none
Coordinate: y/x
Sign: N/A
Answer: 0 = 0
1
Use the Unit Circle to find
cos 90
Reference angle: none
Coordinate: x
Sign: N/A
Answer: 0
Use the Unit Circle to find
cos 150
Reference angle: 30
Coordinate: x
Sign: Answer: -√3
2
Use the Unit Circle to find
cos 330
Reference angle: 30
Coordinate: x
Sign: +
Answer: √3
2
Use the Unit Circle to find
cos 240
Reference angle: 60
Coordinate: x
Sign: Answer: -1
2
Use the Unit Circle to find
tan 180
Reference angle: none
Coordinate: y/x
Sign: N/A
Answer: 0 = 0
1
Use the Unit Circle to find
tan 135
Reference angle: 45
Coordinate: y/x
Sign: +/- = Answer: -1
Use the Unit Circle to find
tan 135
Reference angle: 45
Coordinate: y/x
Sign: +/- = Answer: -1

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