Unit 3 Trig

1. __________shift Horizontal shift of a trigonometric function.
5. Reciprocal of tangent.
8. Ratio of opposite side to hypotenuse.
10. A circle of radius 1 centered at the origin.
12. Traditional angle measure dividing a full rotation into 360 parts.
13. side The side next to the reference angle (not the hypotenuse).
15. Reciprocal of cosine.
17. Ratio of opposite side to adjacent side.
18. __________angle The acute angle formed with the x-axis.
20. Reciprocal of sine.
22. __________shift An upward or downward translation of a trig function.
23. ______________________identity Fundamental relation (sinx)^2 +(cosx)^2 =1
24. A function symmetric about the origin (e.g., sine).

2. The longest side of a right triangle, opposite the right angle.
3. side The side across from the reference angle.
4. Ratio of adjacent side to hypotenuse.
6. Half the distance between maximum and minimum values of a trig graph.
7. Angles whose terminal sides lie on the x- or y-axis.
9. Angle measure defined by arc length on the unit circle.
11. A function that repeats its values in regular intervals.
14. A function symmetric across the y-axis (e.g., cosine).
15. __________position An angle with vertex at the origin and initial side on the positive x-axis.
16. Trig functions obtained by taking reciprocals of sine, cosine, or tangent.
19. __________triangle trigonometry Using trig ratios to relate side lengths and angles in right triangles.
21. The length of one complete cycle of a periodic function.