MCR - Trig: Problem solving with the Cosine and Sine Laws
Channel: Paul King - Erindale SS (2322)
Date: 06/05/2020

This is a video which you might like to get out a pencil and paper to follow along with the problems. Solve as you go; pause the video if needed.

There are 8 parts to this video, covering sections 4.4 and 4.5 of your text. The times are for your reference, in case you need only part of this video:
1. Pythagorean theorem; Pythagorean Identity (0 - 7:06)
2. The Sine Law and Cosine Law (7:07 to 16:20)
3. Some examples of choosing the right formula (16:21 to 22:45)
4. Rules for knowing when to use the right formula (22:46 to 26:00)
5. A right-angle example problem (26:01 to 30:41)
6. A 2D example using Cosine Law (30:42 to 37:45)
7. A 3D example using the Sine Law (37:46 to 45:54)
8. A 3D example using the Cosine Law (45:54 to end)

Nerdy tech details: Shot with a Canon Rebel T3i in high def; put together in Linux (Ubuntu Studio version 10.04) using kdenlive; screen footage using vokoscreen; title card using Open Office Impress. This is one of the few times this year that I can have bragging rights about doing an entire video using open source software, on an open source operating system.