Unit Circle

To explore the model to the right for yourself, you can download files which are freely manipulable in your chosen software. You can also download free trials of the software via the program name links.

You can use tools in Cabri or Sketchpad to add measurements between points or calculate the ratio between two measurements. As you transform the file the measurements will update on screen.

y = sin x

The Flash movie below shows y = sin x dynamically.

Cabri Geometry II files are text files. If, when you click on the Cabri file links, your browser window fills with text, either save it as a text file with the .fig extension, or alternatively right-click to download the file, choosing to "save as" to your PC.

Please note that this site uses Flash Player to display moving images.  If you can't see the moving images you may not have the Flash Player plug-in installed on your computer.  To install the Flash Player please go to http://www.macromedia.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash