### Trigonometry: Sine, cosine, and the unit circle

Trigonometry: How to use the unit circle to remember values of sine and cosine for certain reference angles. This is a recording of a tutoring session, posted with the students' permission. These videos are offered on a "pay-what-you-like" basis. You can pay for the use of the videos at my website: http://www.freelance-teacher.com/videos.htm For a list of all the available video series, arranged in suggested viewing order, go to my website.

Length:
08:38