Q$\mathrm{.}3.[20\%]$ Determine the type and the sense of the polarization of the following waves. Support your results by derivations and$/$or diagrams.

a$)[7\%]\frac{(tilde(E))}{(tilde(n))}(\frac{?}{\text{b}\text{a}\text{r}}(r))=[hat(a{)}_z(3+\sqrt[\phantom{2}]{27}j)+3$hat$(a{)}_x(\sqrt[\phantom{2}]{3}-j)]e^{jky}$

b$)[7\%]tilde(H)(\frac{?}{\text{b}\text{a}\text{r}}(r))=(3a_y-j4a_z)e^{jkx}$

c$)[6\%]tilde(E)(vec(r))=[jhat(a{)}_x+$hat$(a{)}_z\frac{1}{\sqrt[\phantom{2}]{12}}(2+j2)e^{j\frac{}{4}}]e^{jky}$