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The Complete Idiot's Guide to Trigonometry by Izolda Fotiyeva, Ph.D., Izolda Fotiyeva, Dmitriy Fotiyev

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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: ap1.png then ap2.png.

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°.

ap3.png

Because we already know the measure ...

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