Trigonometric functions are defined from the unit circle, emphasizing their periodic behavior. Periodic data can often be modeled with sine curves. Trigonometric functions are also used to solve triangle problems with geometric applications.
| Instructional Days
(suggested)
34 - 46 days |
Click on subtopics below to see resources from the Ohio Resource Center
|
| a. Periodic data to motivate the study of trigonometric functions (from physics, astronomy, etc.). | 2-3 |
| b. Unit circle definition of trigonometric functions, degree and radian measure, periodic functions, examples of periodic data (from physics, astronomy, etc.). | 6-8 |
| c. Relate to definitions using right triangles. | 2-3 |
| d. Graphs of sine, cosine, and tangent. | 3-5 |
| e. Graph transformations: amplitude, period, phase shift. | 4-6 |
| f. Trigonometric regression (using technology) and applications. | 3-4 |
| g. Law of Sines, Law of Cosines, and solving triangles. | 5-7 |
| h. Inverse trigonometric functions: domain and range, and applications. | 5-6 |
| Review and testing | 4 |