1. Practice exam (When finished, work quietly on the problem sets or come ask questions) More on trigonometry More on similarity

2. Is useful only for right triangles Is useful for finding missing side lengths Is useful for finding missing angles Can be summed up: “SOHCAHTOA”

4. Find missing side lengths using sine, cosine, tangent Complete FIRST PROBLEM SET

5. The inverse versions of sine, cosine, and tangent let you find missing angles from the ratios of known side lengths These work only for right triangles (just like the normal versions)

7. Find missing angles using inverse sine, inverse cosine, and inverse tangent Complete SECOND PROBLEM SET Complete THIRD PROBLEM SET Complete FOURTH PROBLEM SET

8. When you see a scale drawing, it is really just a similar figure

10. Similar polygons have a scale factor that shows the units

11. TASK: Draw similar polygons to scale (create a scale drawing) Complete FIFTH PROBLEM SET

12. Write me a note about the test. Include your estimate of how well you did: “no problems anywhere” “I did fine on some, badly on some” “I think I did badly on most”