Oh i meant i(t) = cos(ωt+φ) + j*sin(ωt+φ) so the imaginary part of i(t) is j*sin(ωt+φ) so for U=Ri(t), we take the real part and get U = R*cos(ωt+φ) and hence the imaginary part is implied by (ωt+φ), i.e, it is not written out but we can easily get it to be j*sin(ωt+φ). Is that not correct ?
1. I have a complex Ohm question in which u(t) is given as Umax*\sqrt{2}cos(\varpi+\varphi), i know how to convert from trigo to euler form if i have both sin and cos but this doesn't. Is it possible to convert just a cos to Euler form ?
3. Since it is a complex impedance i tried to...