UNIT CIRCLE
θsin = = y
y
rcoordinate θcos = = x
x
rcoordinate θtan = =
y
x
y coordinate
xcoordinate
, ,
90°
120°
60°
135°
45°
150°
30°
180° 0
210°
330°
225°
315°
240°
300°
270°
π
2π
3
1
2
3
2
,
π
4
2
2
2
2,
π
6
3
2
1
2
,
11 π
6
3
2
1
2
,
7 π
4
2
2
2
2
,
5 π
3
1
2
3
2
,
4 π
3
1
2
3
2
,
5 π
4
2
2
2
2,
7 π
6
1
2
3
2,
5 π
6
1
2
3
2,
3 π
4
2
2
2
2
,
2 π
3
1
2
3
2
,
(0, 1)
π2 (1, 0)π (-1, 0)
3 π
2(0, -1)
