Acute Angles and Right Triangles

2

Acute Angles

and Right

Triangles

? 2008 Pearson Addison-Wesley.

All rights reserved

2 Acute Angles and Right Triangles

2.1 Trigonometric Functions of Acute Angles

2.2 Trigonometric Functions of Non-Acute

Angles

2.3 Finding Trigonometric Function Values

Using a Calculator

2.4 Solving Right Triangles

2.5 Further Applications of Right Triangles

Copyright ? 2008 Pearson Addison-Wesley. All rights reserved.

2-2

2.1

Trigonometric Functions of

Acute Angles

Right-Triangle-Based Definitions of the Trigonometric Functions

Cofunctions Trigonometric Function Values of Special Angles

Copyright ? 2008 Pearson Addison-Wesley. All rights reserved.

2-3

2.1

Example 1 Finding Trigonometric Function Values of An

Acute Angle (page 51)

Find the sine, cosine, and

tangent values for angles D

and E in the figure.

Copyright ? 2008 Pearson Addison-Wesley. All rights reserved.

2-4

2.1

Example 1 Finding Trigonometric Function Values of An

Acute Angle (cont.)

Find the sine, cosine, and

tangent values for angles D

and E in the figure.

Copyright ? 2008 Pearson Addison-Wesley. All rights reserved.

2-5

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