Is it possible to work out the centre of an ellipse?(adsbygoogle = window.adsbygoogle || []).push({});

The question asks for the eccentric angle of the ellipse with the equation x²+9y²=13 at point (2,1)....

I have no idea how to get this, I know that the angle would be arctan(1/2) if the ellipse was centred at (0,0)

Thanks

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# Homework Help: Is it possible to work out the centre of an ellipse?

**Physics Forums | Science Articles, Homework Help, Discussion**