Plane curves

Earth section paths

Earth section paths are plane curves defined by the intersection of an earth ellipsoid and a plane (ellipsoid plane sections). Common examples include the great ellipse (containing the center of the ellipsoid) and normal sections (containing an ellipsoid normal direction). Earth section paths are useful as approximate solutions for geodetic problems, the direct and inverse calculation of geographic distances. The rigorous solution of geodetic problems involves skew curves known as geodesics. (Wikipedia).

Earth section paths
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From playlist PHYSICS 18 GRAVITY

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From playlist What is a cross section?

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From playlist Engineering Mathematics

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From playlist Circular and Satellite Motion

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Related pages

Dot product | Geodesics on an ellipsoid | Elliptic integral | Unit vector | Plane (geometry) | Analytic geometry | Great ellipse | Atan2 | Plane curve