On this page you can see the interaction between sine and cosine waves, when they are drawn using the unit circle. 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 dotted lines dynamically update based on the mouse position, showing the relationship between the unit circle and the waves.
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)