## Appendix B

## Practice Problems and Answers

#### Chapter 4 Trigonometric Functions and Right Triangles

**Problem 1:** Without using the table, find the value of (tan30°)(tan60°).

Using the relations in the 30°-60°-90° right triangle, write: then .

**Answer:** The product is equal to 1.

**Problem 2:** In a right triangle, the hypotenuse is 17 units long. Find the length of a leg that is adjacent to an acute angle with a measure of 32°.

Because we already know the measure ...