Calculate Phase Difference in RC Circuit w/ R, C & f

[logan222111]

In an RC circuit, two parallel branches, one branch with two resistors in series, and the other with a resistor and a capacitor in series. What is the phase difference between the two parallel branches of an AC signal?

Have R, C, f. I was told I would be able to calculate this phase difference with;

psi=atan(I(V)/R(V)), Where "R and I are the real and imaginary parts." and that's all I've got. I know the formal definition of phase comes from
y=Asin(fx+θ) where psi=-θ/f, but this is apparently not correct. Please any hints/help!

 

[Spinnor]

You have three basic electrical components, R, C, and L. Apply an alternating voltage to each component and measure both the voltage and current across each component. Voltage and current will be in phase for the resistor. Voltage will lead or lag the current in the other components. For a better explanation see,

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/impcom.html

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/impcom.html

http://www.ux1.eiu.edu/~cfadd/1160/Ch22AC/RCL2.html