Geogebra Sine and Cosine Applet
Follow these steps to explore the sine and cosine graphs:
1. Drag point C arounf the circle, notice how angle beta changes.
2. Try turning on the "trace sine" button and drag C around the circle.
3. Now select the "Show referecne graph" button.
4. Repeat steps 2 and 3 for cosine.
What did you notice about the relationship between the angle beta and the graphs?
What do you wonder about this construction?
How does changing beta change sine and cosine?