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Type or paA series RLC circuit with a resistance of 116.0 Ω has a resonance angular...

Type or paA series RLC circuit with a resistance of 116.0 Ω has a resonance angular frequency of 5.1 ✕ 105 rad/s. At resonance, the voltages across the resistor and inductor are 60.0 V and 40.0 V, respectively.

(a) Determine the values of L and C.

(b) At what frequency does the current in the circuit lag the voltage by 45°?
Please show every step of your calculation for part b of how you get to the frequency. I have looked at many other similar question for part b already and can't figure out how others solve for part b because they skip steps in their calculation for part b. Maybe I'm lacking in math skill. I don't know.

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