The phase angle is the angle between the current and voltage.
This is found by using the following formula:
Phase angle = inverse tangent( (XL - XC )/ R) (*where XL = inductive reactance, XC = capacitive reactance)
So first we need to find XL and XC :
XL = ω*L (*where ω = angular frequency, L = inductance)
XC = 1 / ω*C (*where ω = angular frequency, C = capacitance)
and ω is equal to:
ω = 2*pi*f (*where f = frequency in Hz)
After finding XL and XC, plug back into first equation fo find teh phase angle
If XL > XC then Voltage leads, if XL < XC then Current leads, if they're equal then the phase angle is 0.