The capacitive reactance in an RLC circuit is determined to be 45 when the inductive reactance

The capacitive reactance in an RLC circuit is determined to be 45 Ω when the inductive reactance is 65 Ω.

(a) Is the generator frequency v higher or lower than the natural frequency v0?

(b) Is the phase angle f positive or negative?

(c) Calculate the phase angle f if R = 33 Ω.