What is the polarization of the following wave?

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BryanDorais
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What is the polarization of the following wave?

E = (x 20∠0 + y 20∠90°)e-j3z, where x and y are unit vectors

I haven't been able to make an attempt because i have no idea how to start and none of the equations i got in class seem to apply. I know that polarization refers to the direction that the E vector is facing in relation to the wave direction
 
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I figured it out. It's counter-clockwise circular polarization.