Precalc - 4.2 - The Unit Circle

0:49 30-60-90 triangle and 45-45-90 triangle and their side length relationships
6:45 Sin, cos, tan and how they relate to an angle in a right triangle
12:31 Example: Evaluate all six trig functions given a point on the unit circle
21:28 Example: Setup to evaluate all six trig functions given a point on the unit circle
24:30 Example: Evaluate sin pi/6 (example of a SPEED QUIZ question)
28:35 Example: Evaluate csc 7pi/6
35:04 Example: Evaluate cos 2pi/3 (example of a SPEED QUIZ question)
37:37 Domain and Range of sin and cos functions
39:13 Even and Odd functions
42:24 Example: Evaluate cos pi/3 (example of a SPEED QUIZ question)
44:21 Example: Use even/odd property to evaluate cos -pi/3
45:11 Example: Evaluate sin pi/4 (example of a SPEED QUIZ question)
46:51 Example: Use even/odd property to evaluate sin -pi/4
48:52 Periodic Functions, generally
49:54 Trig functions and their periods
50:32 Example: Evaluate cot pi/3 (example of a SPEED QUIZ question)
53:18 Example: Use period of tan function to evaluate cot 10pi/3
55:16 Example: Evaluate cos 3pi/4 (example of a SPEED QUIZ question)
57:20 Example: Use period of cos to evaluate cos 11pi/4
59:04 Example: Use period of sin to evaluate sin (-pi/4 - 2000pi)
1:02:48 Reciprocal Identities
1:05:20 Quotient Identities
1:05:56 Pythagorean Identities
1:08:00 Example: Use identities to evaluate trig functions
1:11:14 Example: Use Pythagorean identity