Trigonometry Terms

2. made from moving a ray around its endpoint
4. theta= s/r;measure of a central angle that intercepts an arc equal in length to the radius of the circle
8. when 2 angles combine to make 90 degrees
9. measure of how fast the angle changes; central angle/time; theta/t
12. Derived from Greek, It's the section of math that deals with the sides and angles of triangles along with their relationship
13. counterclockwise rotation
16. the starting position of an angle
17. 2 angles that equal to 180 degrees
20. pi(rad)/180 degrees; 180 degrees/pi(rad)

1. the other ray of an angle that shows the rotation
3. measure of how fast a particle moves;arc length/time; s/t
5. vertex is the center of a circle; can define a radian
6. when an angle starts on a positive x-axis
7. way to measure angles; equal to rotation 1/360 of a complete revolution
10. clockwise rotation
11. between 90 degrees and 180 degrees
14. when 2 angles share a side that is the Initial side of one and the Terminal side of the other
15. how much rotation from the initial side to the terminal side
18. between 0 degrees and 90 degrees
19. s=r(theta)