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: 44

Answer

4

Work Step by Step

Given expression is- = $ \tan^{2} 45^{\circ}$ + $ \tan^{2} 60^{\circ}$ = $ (\tan 45^{\circ})^{2}$ + $ (\tan 60^{\circ})^{2}$ = $ 1^{2} + \sqrt 3^{2}$ ( substituting for exact values of trigonometric functions) = 1 + 3 = 4
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