Depending upon the values of Eox and Eoy we can have several possibilities:
1. If Eoy = 0, then the wave is linearly polarised in the x-direction.
2. If Eoy = 0, then the wave is linearly polarised in the y-direction.
3. If Eox and Eoy are both real (or complex with equal phase), once again we get a linearly polarised wave with the axis of polarisation inclined at an angle 
, with respect to the x-axis. This is shown in fig 6.4.
