## Elementary Technical Mathematics

Published by Brooks Cole

# Chapter 12 - Section 12.1 - Angles and Polygons - Exercise - Page 387: 15

#### Answer

$61^o$

#### Work Step by Step

$\angle AOC\ and\ \angle COB$ are supplementary. $\angle AOC$ has a measure of 119 degrees, so it follows that: $\angle \space COB=$$180^o-119^o=61^o$

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