Answer
$$ - 1.0261 - 2.8191i$$
Work Step by Step
$$\eqalign{
& {\text{Trigonometric form 3}}\left( {\cos {{250}^ \circ } + i\sin {{250}^ \circ }} \right) \cr
& {\text{Calculate }}\cos {250^ \circ }{\text{ and }}\sin {250^ \circ } \cr
& \cos {250^ \circ } \approx - 0.3420 \cr
& \sin {250^ \circ } \approx - 0.9397 \cr
& {\text{,then}} \cr
& \approx 3\left( { - 0.3420 - 0.9397i} \right) \cr
& {\text{Distributive property}} \cr
& \approx - 1.0261 - 2.8191i \cr} $$
