2 Fix formatting edited May 23 '18 at 14:38 Dave Tweed♦ 130k1010 gold badges164164 silver badges280280 bronze badges Simple: a sine wave in time, t, is the imaginary part of: $$e^{j \omega t}$$ where wω is the angular frequency. Simple: a sine wave in time, t, is the imaginary part of: $$e^{j \omega t}$$ where w is the angular frequency. Simple: a sine wave in time, t, is the imaginary part of: $$e^{j \omega t}$$ where ω is the angular frequency. 1 answered May 23 '18 at 14:24 Mr Central 49011 silver badge77 bronze badges Simple: a sine wave in time, t, is the imaginary part of: $$e^{j \omega t}$$ where w is the angular frequency.