This document contains mathematics exercises involving trigonometric functions and identities. It asks the student to 1) find the values of trig functions given angle measures, 2) prove various trigonometric identities, and 3) use half-angle identities to find trig functions of divided angles given the functions of the original angles.

1. EXERCISES 4.8
A. Find the value of , and , given the following:
1.
2.
3.
4.
5. express answers in terms of u
B. Prove/Verify the following.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
C. Find the values of sine, cosine and tangent of the following using
half-angle identities.
1. , given
2. , given
3. , given
4. , given
5. , given
6. , given
7. , given