In a balanced Y-Y circuit, the line voltage is \(V_{\mathrm{L}}=440 \mathrm{~V}\) (rms). The phase impedance is \(Z_{\mathrm{Y}}=30+j 40 \Omega /\) phase. Using \(<\) \(\mathbf{I}_{\mathrm{A}}=\mathrm{O}^{\circ}\) as the phase reference, find \(\mathbf{I}_{\mathrm{A}}\) and \(\mathbf{V}_{\mathrm{AB}}\) in polar form for a positive phase sequence.