On this page you can see the interaction between the unit circle and the sine waves together. This is closely related to the other page, Sine and Cosine Waves Representation. The green line represents the sine wave, while the red line represents the cosine wave. You can use your cursor on the waves to see how the values change.
The values displayed next to the dots represent two things; the angle on the unit circle and the sine or cosine value at that angle.
Example: (angle in degrees, sine or cosine value)