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multivariable calculus - converting a circle's equation not touching axis to polar from Cartesian system for integration - Mathematics Stack Exchange
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trigonometry - Equation of a circle in polar coordinates under a linear transformation - Mathematics Stack Exchange
![Equation of a circle in polar form, General equation of a circle in polar coordinates, Polar equation of a circle with a center on the polar axis running through the pole, Polar Equation of a circle in polar form, General equation of a circle in polar coordinates, Polar equation of a circle with a center on the polar axis running through the pole, Polar](http://www.nabla.hr/CircleOnPolarAxisEx.gif)
Equation of a circle in polar form, General equation of a circle in polar coordinates, Polar equation of a circle with a center on the polar axis running through the pole, Polar
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