# Chapter 6 - 6.1 - Angles and Their Measure - 6.1 Exercises - Page 430: 24

(a) $405°$ $-315°$ (b) $-60°$ $300°$

#### Work Step by Step

(a) $45°+360°=405°$ $45°-360=-315°$ (b) $-420°+360°=-60°~~$ $-60°+360°=-420°+2\times360°=300°$

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