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/002/427/624/original/b46af10e-ea77-4c1f-ad6e-bbab0f037b9e.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/002/427/626/original/5fa82fdb-5d3e-4aa8-9591-99db3ecf1492.png)