Answer
$C=1.49 \times 10^{-5} \mathrm{~F} $
Work Step by Step
$
\begin{aligned}
C & =\frac{I_2}{2 \omega_d \varepsilon_m\left(1-\tan \phi_1 / \tan \phi_0\right)}=\frac{2.00 \mathrm{~A}}{2(2 \pi)(60.0 \mathrm{~Hz})(120 \mathrm{~V})\left(1-\tan 10.0^{\circ} / \tan \left(-20.0^{\circ}\right)\right)} \\\\
& =1.49 \times 10^{-5} \mathrm{~F} .
\end{aligned}
$
