EM wave polarization and antenna orientation

[MEAHH]

Homework Statement

A radio-frequency EM plane wave propagates in the +z-direction. A student finds that her portable radio obtains the best reception of the wave when the antenna is parallel to the x--y plane making an angle of 60 degrees with respect to the y-axis .
(a) Consider an instant when the fields are non-zero at the location of the antenna.
Draw and lable the direction of the electric field and the direction og the magnetic field.Explain
(b)How would your answers to part a be different if the wave were propagating in the -z-direction.Explain

The Attempt at a Solution

a) i drew the E field parallel to the antenna and the b field perpendiculat to it so that the oscillation will be at a max...is this right?
b) i am unsure of what changes

 

[LowlyPion]

I don't think anything changes if you reverse the direction between +z and -z.

The e and the h waves are still perpendicularly polarized with respect to the orientation of the antenna is my understanding.