# The Trig Functions in the Coordinate Plane

- Author:
- Terri Rehner

- Topic:
- Functions

Trig Functions in the Coordinate Plane

1. Compute the value of sin, cos, and tan of the given angle.
2. Click on the check boxes of each to see if you are correct.
3. Drag point C around the circle until it is in quadrant 2
4. Repeat steps 1 and 2
5. Drag point C around the circle until it is in quadrant 3
6. Repeat steps 1 and 2
7. Drag point C around the circle until it is in quadrant 4
8. Repeat steps 1 and 2
9. Try dragging point C until it is on the x-axis and y-axis and repeat steps 1 and 2.
10. Summarize your findings, pay attention to the sign of values for the trig functions, explain why things were what they were.