The Unit Circle Right Triangle Trigonometry
Special Trig Value Table:
π
6
π
4
π
3
π
2
t
sint
cost
0
0
1
= 30
1
2
3
2
2
2
1
2
0
= 45
= 60
= 90
2
2
3
2
1
This table can be found by writing in the form:
t
sint
cost
0
0
2
4
2
3
2
2
2
1
2
0
2
π
6
π
4
π
3
π
2
1
2
2
2
3
2
4
2
ASTC = All Students Take Calculus =
All trig functions positive in Q1, Sine positive in Q2, Tangent positive in Q3, Cosine
positive in Q4