hi, how do i interpret fourier transform of a sinusoidal signal F[cos(w0*t)] = pi*[del(w-w0)+del(w+w0)]
-- why is there a negative frequency component at -w0 ? we used only a cos signal with positive frequency
--shouldn't the transform be just {del(w-w0)} as i have used a cos signal with UNIT amplitude. so why does pi appear in original transform ?
--why is the FT of sin(w0*t) a complex function. shouldnt it again be {del(w-w0)}