The L and C impedances cancel each other out, so you have only R at resonance. Thus the phase angle will be zero.
The angle by which a circuit's current leads or lags its supply voltage.
In a three phase system it is 120 degrees.
To measure phase angle on a scope, connect the two inputs to the two sources, trigger off of one, and watch both. Measure the period of one and compare crossover difference with the other as a...
The generated angle between phases in a three phase system is 120 degrees.