- The Trigonometric Ratios – This screencast introduces the three basic trigonometric ratios and teaches the user how to use them to find the sides of a triangle
- Converting Radians to Degrees – This screencast describes how to convert radians to degrees
- Converting Degrees to Radians – This screencast describes how to convert degrees to radians
- Introduction to Radians – This screencast introduces the concept of radians.
- Angles and Degrees – This screencast discusses the definition of angles, how they are measured and includes coterminal angles
- Simiilar Triangles – This screencasts shows the meaning of similar triangles and gives examples on how to find missing sides.
- The Unit Circle Part 1 – This screencast illustrates what is meant by a unit circle and how it can be used to find the sine and cosine of the reference angle in the first quadrant
- The Unit Circle Part 2 – This screencast depicts how to find the sine and cosine of various angles using the unit circle.
- The Unit Circle Part 3 – This screencast gives examples on how to use the unit circle to find the since and cosine of various angles.
- The Inverse Trigonometric Functions – This screencast defines the inverse trigonometric functions and gives examples on how they are used.
- Stretching and Shrinking Trig Graphs Horizontally – This screencast illustrates how to shrink the sine and cosine curves horizontally
- Shifting the Sine and Cosine Curves Horizontally – This screencast describes how to shift the sine and cosine curves horizontally.
- Trigonometric Translations Part 1 – This screencast gives an exampe of how to determine the graph of a sinusoidal graph involving vertical and horizontal shifting and vertical and horizontal stretching and shrinking
- Trigonometric Translations Part 2 – This screencast gives an example of finding the equation of a sinusoidal curve that has been shifted and shrunk in both directions
- Shifting the Sine and Cosine Graphs Vertically – This screencast demonstrates how to shift the graphs of the sine and cosine curves.
- Stretching and Shrinking the Sine and Cosine Graphs – This screencast demonstrates how to stretch and shrink the sine and cosine curves.
- The Sine and Cosine Graphs – This screencast discusses the basic features of the sine and cosine functions including amplitude, period and midline.
- Right Triangle Word Problems – This video shows how to solve right triangle word problems where your unkown is on the top of the fraction.
- Angles of Elevation and Depression – This screencast demonstrates the definitions of the angles of elevation and depression
- Trig Graphing Example – This video will walk through a trig graphing example
- Trig Graphing Example 2 – This video will walk you through a trig modeling example from our online textbook.
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