## Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

$\overline{A}$ = $\{0,2,6,7,8\}$
$\overline{A}$ is the set of elements of $U$, that are not in $A$. Thus, $\overline{A}$ = $\{0,2,6,7,8\}$