Trigonometry 7th Edition

Published by Cengage Learning
ISBN 10: 1111826854
ISBN 13: 978-1-11182-685-7

Chapter 2 - Section 2.1 - Definition II: Right Triangle Trigonometry - 2.1 Problem Set: 37

Answer

3

Work Step by Step

Given expression = $ ( 2 \cos 30^{\circ})^{2}$ =$ ( 2 \times \frac{\sqrt 3}{2})^{2}$ ( substituting exact value of $\cos 30^{\circ}$) = $(\sqrt 3)^{2}$ = 3
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