Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 5 - Trigonometric Functions - 5.1 Angles - 5.1 Exercises - Page 504: 26


$(5x+5)^\circ=55^\circ$ $(3x+5)^\circ=35^\circ$

Work Step by Step

The sum of the two angles is a right angle ($90^\circ$): $(5x+5)^\circ+(3x+5)^\circ=(8x+10x)^\circ=90^\circ$ $8x+10=90$ $x=10$ $(5x+5)^\circ=55^\circ$ $(3x+5)^\circ=35^\circ$
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