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HOW BECOME A TRIGONOMETRY MASTER IS SET UP TO MAKE COMPLICATED MATH EASY
This 60lesson course includes video explanations of everything from Trigonometry and Precalculus. Become a Trigonometry Master is organized into the following sections:
HERE'S WHAT SOME STUDENTS OF BECOME A TRIGONOMETRY MASTER HAVE TOLD ME:
"Krista's courses are the absolute best you can find online, as far as I'm concerned. I feel like I am actually learning something from them!"  Jon K.
“The Instructor has an excellent command of the subject material and a great way of presenting it. In addition to that, she has a very pleasant voice that keeps you attentive.”  Robert S.
“This is an excellent course to become more familiar with trigonometric equations. The step by step instruction is very is to follow. I found it very helpful to follow along with solving the problems on paper to solidify the learning experience.”  David M.
“Krista explains everything in "simplest terms" so even if you haven't worked with this stuff for a while, she makes it totally easy to get back into the swing of it all. Thanks for (another) excellent course!”  Paul L.
“Huge help to be able to review these in a platform much more suited to learning than YouTube.”  Wesley F.
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Section 1: Getting started  

Lecture 1 
Welcome to Trigonometry!
Preview

00:34  
Section 2: Introduction to angles  
Lecture 2 
Complementary and supplementary angles
Preview

04:00  
Lecture 3 
Sketching angles in standard position

10:15  
Lecture 4 
Quadrant of the angle

08:19  
Section 3: Angles and their measure  
Lecture 5 
Converting between degrees and dms

06:56  
Lecture 6 
Finding coterminal angles
Preview

10:56  
Lecture 7 
Finding coterminal angles, example 2

12:23  
Lecture 8 
Converting between degrees and radians

03:48  
Lecture 9 
Converting between degrees and radians, example 2

04:30  
Lecture 10 
Oriented arc for a real number

05:41  
Lecture 11 
Area of a circular sector

03:51  
Section 4: The unit circle  
Lecture 12 
Finding sine and cosine of an angle theta

04:07  
Lecture 13 
Finding sine given cosine, or vice versa

09:59  
Lecture 14 
All possible values for the angle theta

08:28  
Lecture 15 
All possible values for the angle theta, example 2

09:05  
Lecture 16 
All possible values for the real number t

03:50  
Lecture 17 
Completing a triangle

06:01  
Lecture 18 
Finding the side lengths of the triangle

02:44  
Lecture 19 
Given a point on the terminal side of the angle

03:48  
Section 5: Six circular functions  
Lecture 20 
Find the value or say where the function is undefined

08:25  
Lecture 21 
Find all six trig functions given the quadrant of the angle

12:04  
Lecture 22 
Find all six trig functions at the coordinate point

07:37  
Lecture 23 
Find all six trig functions using reciprocal identities

05:27  
Lecture 24 
Angle of elevation

04:23  
Lecture 25 
Proving the trig equation

05:37  
Lecture 26 
Proving the trig equation with pythagorean identities

05:49  
Section 6: Trig identities  
Lecture 27 
Using evenodd identities

04:40  
Lecture 28 
Using sumdifference identities

13:44  
Lecture 29 
Using sumdifference identities, example 2

10:44  
Lecture 30 
Using sumdifference identities, example 3

10:25  
Lecture 31 
Using halfangle identities

08:47  
Lecture 32 
Using doubleangle identities to prove the equation

06:10  
Lecture 33 
Using producttosum identities

03:38  
Lecture 34 
Using sumtoproduct identities

03:03  
Lecture 35 
Using trig identities to prove the equation

08:36  
Lecture 36 
List the solutions of the equation inside the interval

06:32  
Lecture 37 
List the solutions of the equation inside the interval, example 2

15:46  
Lecture 38 
Finding the value of an inverse trig function

07:35  
Section 7: Graphing the trig functions  
Lecture 39 
Period and amplitude

05:40  
Lecture 40 
Sketching sine and cosine

12:09  
Lecture 41 
Comparing sine and cosine graphs

08:20  
Lecture 42 
Sequence of transformations

05:37  
Section 8: The law of sines  
Lecture 43 
Law of sines

06:14  
Lecture 44 
Law of sines for area of a triangle

05:50  
Section 9: The law of cosines  
Lecture 45 
Law of cosines

07:05  
Lecture 46 
Heron's formula for area of a triangle

06:54  
Section 10: Polar coordinates  
Lecture 47 
Converting polar coordinates to rectangular

04:14  
Lecture 48 
Converting rectangular coordinates to polar

05:21  
Lecture 49 
Express the polar point multiple ways

06:37  
Lecture 50 
Converting equations from polar to rectangular

03:37  
Lecture 51 
Converting equations from rectangular to polar

04:50  
Section 11: Graphing polar curves  
Lecture 52 
Graph the polar curve, circle

05:46  
Lecture 53 
Graph the polar curve, rose

08:57  
Lecture 54 
Graph the polar curve, cardioid

06:07  
Lecture 55 
Graph the polar curve, limacon

07:41  
Lecture 56 
Graph the polar curve, lemniscate

12:08  
Lecture 57 
Intersection points of the polar curves

09:09  
Lecture 58 
Graph the polar region in the xyplane

07:17  
Section 12: Parametric curves  
Lecture 59 
Sketching a parametric curve and its orientation

10:52  
Lecture 60 
Write the equation as a parametric curve

06:33 
I used to do #napkinmath. Now I make videos and other resources to help math students understand the important stuff and pass their classes.