Click on the links below to access eTools.
Investigate how are circles and sine graphs connected.
Explore these eTools to find the height of a seat on The Screamer in two different ways: unit circle and sine graph.
1. Click on the BLUE point (slider 'a') on line 4 and drag horizontally to the desired angle.
![](https://media.screensteps.com/image_assets/assets/002/395/940/original/faaeac6b-b9ba-4515-b3e3-fb756c3823fe.png)
1. Click on the graph and drag along the curve to view a point and its coordinate.
![](https://media.screensteps.com/image_assets/assets/002/396/607/original/f6bd5ac6-b4f3-4d13-81b3-55b921caa1cc.png)