A trigonometry introduction, overview and review including trig functions, cartesian quadrants, angle measurement in degrees and radians, the Unit Circle and the Pythagorean Theorem.

UPDATE: I have posted a longer multi-part trig series! Please see the Introductory video here:    • TR-00: Introduction to Trigonometry S...  
The playlist is here:    • TR - Trigonometry Series by Dennis F....  

Thanks for your patience!

Timestamps for this video:
00:00 Introduction
00:36 1. The Six Trigonometric Functions
09:35 2. Cartesian Coordinates and Quadrants
11:24 3. Angle Measurement in Degrees and Radians
19:34 4. The Pythagorean Theorem
20:44 5. The Unit Circle

International A level, Intl A Level, IAL, Edexcel, Pearson exam board, CIE, Cambridge exam board, P3, P2, Year 10, Class 11