Phasor
= Phasor
{title2=$\widehat A$}
A <phasor> is a <complex amplitude> representing a <sinusoid> at one specified <angular frequency>: $a(t)=\operatorname{Re}(\widehat A e^{\mathrm i\omega t})$. Its <modulus> gives the peak <amplitude> and its <complex argument> gives the <wave phase> in this convention. Both may instead use <root mean square> magnitudes if that normalization is stated.