Module 5: Trigonometry Applications and Identities

 

In Try This 4 you may have seen that A geometric representation of this is shown.

 

The diagram shows sin theta, cos theta, and tan theta represented on the unit circle. The unit circle is then removed in the second picture leaving the two partly overlapping right triangles. The third picture shows the two triangles separated.

A. sin θ, cos θ, and tan θ are represented together on a unit circle.
B. Removing the unit circle leaves two similar triangles.
C. By using the fact that the ratio of corresponding sides of similar triangles
are equal, it can be seen that



Self-Check 2


textbook

Complete questions 6, 7, and C2 on pages 263 and 265 of the textbook. Answer