Math 10C: Trigonometry Part One

This is part one of the lesson on the M4 Trigonometry outcome.

What is trigonometry? 0:00
What are the primary trigonometric ratios? 0:20
Using the reference angle to label a triangle 2:35
The tangent ratio 6:50
Finding the tan ratio given two sides 9:55
Finding an angle with the tangent ratio 12:20
What does tan A = 0.5 actually mean? 16:25
Tangent word problem with angles #1 24:45
Tangent word problem with angles #2 29:00
Review on solving proportions 35:10
Using the tangent ratio to find a side 37:03
Tangent word problem to find a side 47:50