Developing the Law of Cosines
Read each panel by moving the slider to the right.
You can move any of the points A, B, or C and the entire applet is interactive.
This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com
This applet can be used by teachers in a demonstration mode in the classroom or teachers can have students load it on their own computers with a worksheet to be complete for a grade.