An abc-phase-sequence three-phase balanced wye-connected source supplies a balanced delta-...

An abc-phase-sequence three-phase balanced wye-connected source supplies a balanced delta-connected load. The impedance per phase in the delta load is 12 + j6 Ω. The line voltage at the source is Vab = 120 ∠40° V rms. If the line impedance is zero, find the line currents in the balanced wye-delta system.