Precalc Project

2. A set of identities, like (sin^2+cos^2=1), that are useful for solving equations.
5. It is not possible to invert the full size, cosine, or tangent functions. You must restrict their domain to the size of half the period and then invert them.
7. The relationship between sine and cosine. This is shown using tangent and cotangent functions.
8. The inverse of cosine. It is used to find angle measures using a cosine value.
9. How much a wave function varies from the midline. It is represented by a on trig functions.
10. The inverse of tangent. You can plug a tan value into this and it will give you the angle measure.
15. The inverse of sine. It is used to find angle measures.
16. The relationship between each trig function and its reciprocal. For example, sin is 1/csc.
19. The study of relationships between sides and angles on a unit

1. One over cosine. It is even.
3. Whether or not a function passes the horizontal line test. If it does not, it cannot be inverted.
4. 1 over tangent. It is odd.
6. Whether or not the function's output is the same when the input is negated. Cosine is even while tangent and sine are odd.
11. 1 over sine. It is odd.
12. Opposite over adjacent; y/x on a unit circle
13. The x-coordinate on the unit circle. It is adjacent over hypotenuse.
14. A circle with a radius of 1. It is used all the time in trigonometry.
17. The y-Coordinate on the unit circle. It is the opposite over the hypotenuse.
18. How long a wave takes to do a full cycle. It is either b or c/b on wave equations.
20. The radius of the circle put onto the circumference. There are 2pi of these in one rotation.