1. Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall. Section 7.2 Right Triangle Trigonometry

2. Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall.

4. Figure 19 (b)

5. Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall. Trigonometric Functions of Acute Angles

6. Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall.

7. Find the value of each of the six trigonometric functions of the angle θ.

8. Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall.

16. b = 2 c = 5 θ a

17. Since θ is acute the trig functions are all positive.

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19. b = 3 c θ a = 1

20. Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall. Since θ is acute the trig functions are all positive.

21. Copyright © 2012 Pearson Education, Inc. Publishing as Prentice Hall.