Algebra 2 Common Core

Published by Prentice Hall
ISBN 10: 0133186024
ISBN 13: 978-0-13318-602-4

Chapter 1 - Expressions, Equations, and Inequalities - 1-4 Solving Equations - Practice and Problem-Solving Exercises - Page 31: 45

Answer

The angle measures $56^\circ$ and the measure of its complementary angle is $34^\circ$.

Work Step by Step

By definition, two angles are complementary if the sum of their measurements is $90$ degrees. . Let $x$ be the measurement of the angle. Then its complementary angle is $90-x$. The difference between the measures of the angle and its complementary is $22$ degrees. Thus, $$x-(90-x)=22$$ Apply the distributive property then combine like terms: $x-(90-x)=22$ $x-90-(-x)=22$ $x-90+x=22$ $2x-90=22$ Add $90$ to both sides then simplify: $2x-90+90=22+90$ $2x=112$ Divide both sides by $2$: $\dfrac{2x}{2}=\dfrac{112}{2}$ $x=56$ Therefore, the measurement of the first angle is $56$ degrees and the measure of the its complement is $(90-56)=34$ degrees.
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