Trigonometry 7th Edition

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

Chapter 4 - Section 4.6 - Graphing Combinations of Functions - 4.6 Problem Set - Page 249: 7

Answer

$(\pi,-1.5)$

Work Step by Step

$y_1+y_2$ will be above $y_1$ by $y_2$ if $y_2$ is positive. $y_1+y_2$ will be below $y_1$ by $y_2$ if $y_2$ is negative. Hence if the given points are on the original graphs, then $(\pi,-0.5-1)=(\pi,-1.5)$ is on $y_1+y_2.
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