Answer
x + y = 90
Work Step by Step
Since $\angle$1 and $\angle$2 are complementary; m$\angle$1 + m$\angle$2 = 90.
Substitute in x for $\angle$1 and y in for $\angle$2.
x + y = 90.
Elementary Geometry for College Students (7th Edition)
by Alexander, Daniel C.; Koeberlein, Geralyn M.
Published by
Cengage
ISBN 10:
978-1-337-61408-5
ISBN 13:
978-1-33761-408-5
Chapter 1 - Section 1.2 - Angles and Their Relationships - Exercises - Page 47: 15a
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