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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