38:36

5.1 Graphing Sine and Cosine part 2 (Phase shift and Period changes)

32:06

4.3 Trig Integrals

44:32

Cal Final Review

20:11

4.4 part 1 - Introduction to the Unit Circle

47:39

5.2 Graphing CSC and SEC

8:20

Huge math error in paper about black plastics

30:51

5.3 Graphing Tan and Cot

8:20

"I got this asked as a college math exam question, and I didn't have a clue"