In the equations v = \(\sqrt2\)V sin wt and i = \(\sqrt2\)I sin(wt – θ); we find that cosθ is _______

In the equations v = \(\sqrt2\)V sin wt and i = \(\sqrt2\)I sin(wt – θ); we find that cosθ is _______ Correct Answer unitless

The equations of voltage sine wave and current sine wave are given by v = Vmsin wt and i = Im sin(wt – θ) respectively; or as v = \(\sqrt2\)VRMS sin wt and i = \(\sqrt2\)IRMS sin(wt – θ) respectively. All these equations are the graphical representations of sinusoids. Here the units of current, voltage are ampere and volt respectively. Next the power factor, cosθ is basically a ratio and hence unit-less. It is often expressed in decimal e.g. 0.85.