Question: how do you convert complex number in to trig function like how is e ^ ( - 3 + 2 i ) t = e

how do you convert complex number in to trig function like how is e^(-3+2i)t =e^-3t (sin2t) and e^(-3-2i)t = e^-3t (cos2t) and is sin mean + in complex number and cos mean -?

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