Chris Chappa

Trigonometry Video 7.2.8 - A Comment About Simplifying Square Roots

Trigonometry Video 7.2.7 - Another Formula for the Area of a Triangle (Part 2)

Trigonometry Video 7.2.6 - Another Formula for the Area of a Triangle (Part 1)

Trigonometry Video 7.2.5 - Using the Law of Cosines to Find Angles

Trigonometry Video 7.2.4 - The Law of Cosines (Example 3)

Trigonometry Video 7.2.3 - The Law of Cosines (Example 2)

Trigonometry Video 7.2.2 - The Law of Cosines (Example 1)

Trigonometry Video 7.2.1 - The Law of Sines versus SAS; The Law of Cosines

Trigonometry Video 7.1.11 - A New Triangle Area Formula

Trigonometry Video 7.1.10 - The Law of Sines Ambiguous Case (Example 3)

Trigonometry Video 7.1.9 - The Law of Sines Ambiguous Case (Example 2)

Trigonometry Video 7.1.8 - The Law of Sines Ambiguous Case (Example 1)

Trigonometry Video 7.1.7 - The Number of Solutions in the Law of Sines Ambiguous Case

Trigonometry Video 7.1.6 - The Problem with Using the Law of Sines to Find an Angle

Trigonometry Video 7.1.5 - The Law of Sines (Example 2)

Trigonometry Video 7.1.4 - The Law of Sines (Example 1)

Trigonometry Video 7.1.3 - Deriving the Law of Sines

Trigonometry Video 7.1.2 - An Oblique Triangle Problem

Trigonometry Video 7.1.1 - Congruency and Oblique Triangles

Trigonometry Video 5.4.14 - Using Half-Angle Identities - Part 4

Trigonometry Video 5.4.13 - Using Half-Angle Identities - Part 3

Trigonometry Video 5.4.11 - Using Half-Angle Identities - Part 1

Trigonometry Video 5.4.10 - Half Angle-Identities

Trigonometry Video 5.4.12 - Using Half-Angle Identities - Part 2

Trigonometry Video 5.4.9 - Power-Reducing Identities

Trigonometry Video 5.4.8 - Using Sum-to-Product Identities

Trigonometry Video 5.4.7 - Sum-to-Product Identities

Trigonometry Video 5.4.6 - Using Product-to-Sum Identities

Trigonometry Video 5.4.5 - Product-to-Sum Identities

Trigonometry Video 5.4.4 - Using Double Angle Identities - Part 3