Unit Circle Crash Course

Ever wondered what sin, cos and tan actually mean? A little bit stuck on how to calculate sin(150) in your head? Curious as to how we measure the heights of really tall trees without climbing them? Look no further than this crash course! In this video I cover the basics of trig and all the relationships between triangles and circles needed to solve exact values often needed in high school calculus and geometry topics. Timestamps: TRIG FUNDAMENTALS: Intro - 0:00 Trig Basics - 0:52 SIN COS TAN as a ratio - 2:35 Simple Application - 4:30 SIN and COS as side lengths - 6:37 SIN and COS as circle co-ordinates - 7:48 Radians Explained - 10:26 EXACT VALUES: Exact Value Triangles - 13:40 Simple Exact Values - 16:58 Exact Values for Bigger Angles - 18:50 Sin(315) Example - 23:45 Tan is tricky! - 25:32 Cheat Sheet Summary and Example - 28:30