1. AP CALCULUS
The Unit circle
Review 1

2. Def: If the terminal side of an angle is in standard
position and intersects the unit circle at P(x,y) then
x = cos Ɵ and y = sin Ɵ
Trig functions defined using the unit circle are called circular functions.

3. 1.) Find the exact values for the trig functions for 45o

4. 2.) Find the exact values for the trig functions:

5. Def: Quadrantal Angles: Angles whose terminal side coincides with either the x-axis or the y-axis are called quadrantal angles.

6. A S T C - All Students Take Calculus!

7. View this simple hand trick to help memorize the unit circle. www
View this simple hand trick to help memorize the unit circle. 

9. Def: Trigonometric Identities: The trigonometric identities are relationships which are true for all values of the variables for which the expressions are defined.

10. Use trig identities to simplify the following3. 10

11. Suggestions Change everything to sine and cosine
Substitute basic trig identities
Factor or foil the expression
Multiply both numerator and denominator by the same thing
Find a common denominator for sums and differences

12. Assignment
Practice Worksheet: Review Assignment 1, The Unit Circle