Precalculus with Calculus Previews, 6th Edition

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5 Triangle Trigonometry

Chapter Contents

5.1 Right Triangle Trigonometry

5.2 Applications of Right Triangles

5.3 Law of Sines

5.4 Law of Cosines

5.5 Vectors and Dot Product

Chapter 5 Review Exercises

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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