Answer
$310^o$
Work Step by Step
First, we calculate the number of votes not cast for Candidate A by subtracting the votes cast for Candidate A from the total. Then we take the ratio of this number to the total votes cast and multiply by $360^{\circ}$:
$$
\frac{ 29,106-4060}{ 29,106}\times 360^o=309.78^o\approx 310^{\circ}
.$$
