### Unit Circle Practice

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