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Day and Night - a geocentric model
Author:
Elliot Malkin
Topic:
Trigonometry
GeoGebra
A geocentric model of the Earth, Sun and Moon, with the Earth's axis aligned vertically. Purple slider: latitude Orange slider: time Inclinations of orbits are accurate to 1dp. Distances are far from accurate.
New Resources
Tracing Quadrics and Surfaces
apec
Toroidal Spiral
Quadric Surfaces and Cylinders
Maclaurin and Taylor Polynomial
Discover Resources
Proof of y = a x + b, equation for a straight line
Inproduct
The ratio of the radii of the circles of a triangle
graphing lines
Points of Intersection 13
Discover Topics
Inequalities
Triangles
Straight Lines
Curve Sketching
Solids or 3D Shapes