Determine the Thevenin equivalent of the circuit seen from the terminals of $\textbf{Z}_{L}$. Determine the impedance, $\textbf{Z}_L$, for maximum average power transfer and the value of the maximum average power transferred to $\textbf{Z}_L$ for the ciruit shown given
$I_s = 3 A \angle 205\circ$,
$R = 16 \Omega$,
$\textbf{Z}_{L1} = 4i \Omega$.
Ref: Hayt, Sect. 11.2

The Thevenin impedance of the circuit (not including $\textbf{Z}_L$) is $\textbf{Z}_{th} =$ $\Omega$ $\angle$ $\circ$
For maximum power transfer, $\textbf{Z}_L =$ $\Omega$ $\angle$ $\circ$
$P =$ $W$