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

$−0.376−0.137i$
Evaluate the trigonometric expressions by using calculator then simplify to obtain: $0.2 [\cos(200^{\circ})+i⋅\sin(200^{\circ})] \\ =0.4 [−0.9396926208+(−0.3420201433) \ i]\\ \approx −0.376−0.137i$