All of High School Trig in 1 Hour
Channel: Andrew Tasso
Date: 2021-02-17

In this video, you will learn the fundamentals of trigonometry by figuring out how to find the exact value of sin, cos, and tan for any angle.
0:00 The point of Trig
1:00 Sohcahtoa
1:45 Unit circle and quadrantal values (0, 90, 180, 270, 360)
9:15 Special right triangles (45, 45, 90)
14:05 Special right triangles (30, 60, 90)
20:38 Cofunctions
24:24 Memorization trick for first quadrant angles (0, 30, 45, 60, 90)
30:59 Why x is cos and y is sin
32:37 Reference angles, coterminal angles, bowtie
49:17 ASTC memory trick