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Prove that the following representation can be derived for the real sine signal: Asin(0t+)=21Xej/2ej0t+21Xej/2ej0t where X=Aej. In this case, the interpretation is that the sine signal is also composed of two complex exponentials with the same positive and negative frequencies, but the complex coefficients multiplying the terms are different from those of the cosine signal. Specially, the sine signal requires additional phase shifts of /2 applied to the complex amplitude X and X, respectively