The document contains information about trigonometric functions at quadrantal angles (0°, 90°, 180°, 270°). It provides the values of sin, cos, tan, csc, sec, and cot at each of these angles. It also includes examples of drawing figures to evaluate expressions involving trigonometric functions of quadrantal angles.

1. 29. quadrantal angles.notebook November 26, 2012
0o
sin 0o = csc 0o =
cos 0o =
sec 0o =
tan 0o =
cot 0o =
1

2. 29. quadrantal angles.notebook November 26, 2012
90 o
sin 90o = csc 90o =
cos 90o = sec 90o =
tan 90o =
cot 90o =
2

3. 29. quadrantal angles.notebook November 26, 2012
o
180
sin 180o = csc 180o =
cos 180o = sec 180o =
tan 180o = cot 180o =
3

4. 29. quadrantal angles.notebook November 26, 2012
270o
sin 270 = o csc 270o =
cos 270 = o sec 270o =
tan 270o = cot 270o =
4

5. 29. quadrantal angles.notebook November 26, 2012
1. Draw figures as necessary to find 3 tan 180o.
5

6. 29. quadrantal angles.notebook November 26, 2012
2. Draw figures as necessary to find (a) 4sin270o and (b) 3tan270o.
6

7. 29. quadrantal angles.notebook November 26, 2012
3. Evaluate:
7

8. 29. quadrantal angles.notebook November 26, 2012
Sin Cosine Tangent
o
0
o
30
o
45
o
60
o
90
8