Answer
$$ - 0.3502 + i0.9367$$
Work Step by Step
$$\eqalign{
& \operatorname{cis} {110.5^ \circ } \cr
& = \left( {\cos {{110.5}^ \circ } + i\sin {{110.5}^ \circ }} \right) \cr
& {\text{Calculate }}\cos {110.5^ \circ }{\text{ and }}\sin {110.5^ \circ } \cr
& \cos {110.5^ \circ } \approx - 0.3420 \cr
& \sin {110.5^ \circ } \approx - 0.9397 \cr
& {\text{,then}} \cr
& \approx - 0.3502 + i0.9367 \cr} $$
