Question 1070700
Your answer is partially correct.
Your angle should be in radians and not degrees.
{{{2pi=360}}} is the conversion from radians to degrees.
Also,the angle needs to be between ({{{0}}},{{{2pi}}}).
You need to add {{{2pi}}} {{{radians}}} or {{{360}}} {{{degrees}}}.
{{{theta=(-161.565+360)*((2pi)/360)=3.46}}}{{{radians}}}
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Also, you can keep the radical form and then there's no need for approximations,
{{{highlight(Z=2sqrt(10)*(cos(3.46)+i*sin(3.46)))}}}