Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 7 - 7.4 - Sum and Difference Formulas - 7.4 Exercises - Page 540: 95


$\sqrt 2 \sin \theta+\sqrt 2 \cos \theta$

Work Step by Step

$a \sin B \theta+b \cos B \theta=\sqrt {a^2+b^2} \sin (B \theta+C)$ When $a=b$; $a^2+a^2 =4$ $ \implies a=b=\sqrt 2$ Now, $E=2 \sin ( \theta+\dfrac{\pi}{4}) =\sqrt 2 \sin \theta+\sqrt 2 \cos \theta$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.