In this webinar we reviewed basics of quadratic functions: factoring, completing the square, graphing, and applications.

This webinar is intended as a brief refresher of concepts. It is useful to watch it at the end of summer before school starts, or before tests as a review.

For more in-depth learning I recommend to take the Quadratics course that I introduce in the video.

This video is the first part of the Trigonometry review. It includes unit circle, simple equations and identities and graphing.​

This video is the third part of the Trigonometry review. In this part I review sum and product formulas, and finding trig values of an angle given one of the values.​

In geometry we learn that angles lie between 0 and 180 degrees. In this video we extend the understanding of angles and see that they can be larger than 180 degrees. And they can be negative.

We introduce notations of coterminal angles and reference angles. This is one of the basics of trig.

This video is the second part of the Trigonometry review. It includes analytic trigonometry problems.​

This video is the fourth part of the Trigonometry review. In this part I solve more trigonometric equations.​