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Chapter 4
Section 4.1, Extension of Exploration Exercises 63-66 (page 361)Look up the latitude and longitude of a city near your home that is not in Table 4.2. Either use your web browser to search for the key words latitude, longitude or use http://www.bcca.org/misc/qiblih/latlong.html.
Find the difference in longitude between the city you choose and (a) San Francisco, (b) Miami, and (c) New York.
Section 4.2, Extension of Exploration 2 (page 364)
4. Use your calculator to compare the six trigonometric function values for 30° with the six values for 150°. Repeat with 50° and 130°.
5. Predict a rule for relating the trigonometric
function values for 
with the values for
Try other values in part 4 if needed.
Section 4.7, Extension of Exploration 1 (page 421)
| 7. | Find 
as a ratio involving no trig functions. |
| 8. | Find 
as a ratio involving no trig functions. |
| 9. | Repeat part 6 for the answers to parts 7 and 8. |