Precalculus Video Lessons:  Video Lessons are linked below.

Chapter 4:  Trigonometry (Chapter 4 Playlist)

4.1 -- Radian and Degree Measure VIDEO 1 and VIDEO 2
4.2 -- Trigonometric Functions:  The Unit Circle DAY 1  VIDEO 1
4.2 -- Trigonometric Functions:  The Unit Circle DAY 2  VIDEO 1 and VIDEO 2
4.3 -- Right Triangle Trigonometry VIDEO 1, VIDEO 2, and VIDEO 3
4.4 -- Trigonometric Functions of Any Angle VIDEO 1
4.5 -- Graphs of Sine and Cosine VIDEO 1 and VIDEO 2
4.6 -- Graphs of Tangent, Cotangent, Secant, and Cosecant VIDEO 1 and VIDEO 2
4.7 -- Inverse Trigonometric Functions VIDEO 1, VIDEO 2, VIDEO 3, and VIDEO 4
4.8 -- Trigonometric Word Problems ​VIDEO 1, VIDEO 2, and VIDEO 3

Chapter 5:  Analytic Trigonometry (Chapter 5 Playlist)

5.1 -- Using Fundamental Identities VIDEO 1
5.2 -- Verifying Trigonometric Identities VIDEO 1 and VIDEO 2
4.3 -- Solving Trigonometric Equations VIDEO 1, VIDEO 2, and VIDEO 3
4.4 -- Sum and Different Formulae ​ VIDEO 1 and VIDEO 2
4.5 -- Multiple-Angle, Power Reducing, and Product-to-Sum Formulae ​VIDEO 1, VIDEO 2, and VIDEO 3

Chapter 6 and Partial Fractions:  Oblique Triangle Trigonometry and Vectors  (Chapter 6/PF Playlist)

NOTE:  This were the first pandemic recordings (March 2020) so they are by far the lowest quality videos and each video is one example generally.  Lots of short videos.
6.1 -- Law of Sines VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, VIDEO 8, VIDEO 9, and VIDEO 10
6.2 -- Law of Cosines VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, and VIDEO 5
6.3 -- Vectors in the Plane VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, VIDEO 8, VIDEO 9, VIDEO 10, VIDEO 11, VIDEO 12, VIDEO 13, VIDEO 14, VIDEO 15, VIDEO 16, and VIDEO 17
6.4 -- Vectors and Dot Products VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, VIDEO 8, and VIDEO 9
6.5 -- Trigonometric Form of Complex Numbers VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, and VIDEO 6
2.7 -- Partial Fraction Decomposition ​VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, VIDEO 8, VIDEO 9, and VIDEO 10

Chapter 9:  Sequences, Series, and Probability (Chapter 9 Playlist)

NOTE:  This were the first pandemic recordings (March 2020) so they are by far the lowest quality videos and each video is one example generally.  Lots of short videos.
9.1 -- Sequences and Series VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, VIDEO 8, VIDEO 9, VIDEO 10, VIDEO 11, VIDEO 12, and VIDEO 13
9.2 -- Arithmetic Sequences and Partial Sums VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, and VIDEO 7
9.3 -- Geometric Sequences and Series VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, and VIDEO 6
9.4 -- Proofs by Mathematical Induction VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, and VIDEO 7
9.5 -- The Binomial Theorem VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, and VIDEO 6
9.6 -- Counting Principles VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, and VIDEO 8
9.7 -- Probability VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, VIDEO 8, VIDEO 9, VIDEO 10, and VIDEO 11

Chapter 10:  Conic Sections, Parametric, and Polar (Chapter 10 Playlist)

NOTE:  This were the first pandemic recordings (March 2020) so they are by far the lowest quality videos and each video is one example generally.  Lots of short videos.
10.2 -- Parabolae and Circles VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, VIDEO 8, VIDEO 9, and VIDEO 10
10.3 -- Ellipses VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, VIDEO 8, and VIDEO 9
10.4 -- Hyperbolae VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, VIDEO 8, VIDEO 9, VIDEO 10, VIDEO 11, VIDEO 12, VIDEO 13, and VIDEO 14
10.6 -- Parametric Equations VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, and VIDEO 7
10.7 -- Polar Coordinates VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, VIDEO 7, VIDEO 8, VIDEO 9, VIDEO 10, VIDEO 11, and VIDEO 12
10.8 -- Graphs of Polar Equations ​VIDEO 1, VIDEO 2, VIDEO 3, VIDEO 4, VIDEO 5, VIDEO 6, and VIDEO 7

Intro to Calculus (ITC Playlist and ITC Packet)

NOTE:  This were the first pandemic recordings (March 2020) so they are by far the lowest quality videos and each video is one example generally.  Lots of short videos.
ITC1 -- Limits Graphically VIDEO 1, VIDEO 2, and VIDEO 3
ITC2 -- Limits Algebraically VIDEO 1 and VIDEO 2
ITC3 -- Difference Quotients and the Limit Definition of the Derivative VIDEO 1, VIDEO 2, and VIDEO 3
ITC4 -- Derivatives with the Power Rule, Sum/Difference Rules VIDEO 1 and VIDEO 2
ITC5 -- Derivatives with the Product Rule and Trig Derivatives VIDEO 1 and VIDEO 2
ITC6 -- Derivatives with the Quotient Rule VIDEO 1
ITC7 -- Writing Equations of Tangent and Normal Lines VIDEO 1 and VIDEO 2
ITC8 -- ​Derivatives with the Chain Rule and Derivative of e^x VIDEO 1