**5 Triangle Trigonometry**

**Chapter Contents**

**5.1** Right Triangle Trigonometry

**5.2** Applications of Right Triangles

5.1 Right Triangle Trigonometry

**INTRODUCTION** The word *trigonometry* (from the Greek *trigonon* meaning “triangle” and *metria* meaning “measurement”) refers to the measurement of triangles. In Section 4.2 we defined the trigonometric functions using coordinates of points on the unit circle and by using radian measure we were able to define ...

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