Angle ψ Between the Ellipse Axis and the x-Axis
Finally nailed the derivation for the angle ψ that an ellipse's major axis makes with the x-axis — posting it because nobody else seems to have one up.
Back when I was in the lower grades…
when there’s an ellipse like this,
about the relation for the angle psi that the major axis makes with the x-axis;;;;;
the classical mechanics textbook
had written it like this, and I realized while moving that posting over to English that I hadn’t properly derived it back then T_T T_T T_T T_T
Well… anyway, today I did manage to do it.
The reason I’m bothering to put up a posting is that a lot of people ask about this,
but a posting with the derivation doesn’t seem to come up in searches, so I’m putting one up….
Actually, I don’t think what I worked out is the standard approach,
and I’m sure there has to be an easier method,
but anyway, I did prove it T_T T_T T_T
Sigh…
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