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Demonstrations 1 - 20 of 160
Theorem on the Dihedral Angles of an Isosceles Tetrahedron
Spherical Cosine Rule for Angles
Menelaus' and Ceva's Theorem for Spherical Triangle
Spherical Right Triangles
Four Theorems on Spherical Triangles
Spherical Law of Cosines
Sines of the Dihedral Angles of a Tetrahedron
Polar Plots Drawn by a Mechanical Linkage
Spherical Triangle Solutions
Machin's Computation of Pi
Parametric Plots from Rectangular Plots
Copernicus's Chord Tables from De Revolutionibus Orbium Coelestium
Copernicus's Chord Tables
Representations of Trigonometric and Hyperbolic Functions in Terms of Sector Areas
First and Second Derivatives of a Periodic Function Using Discrete Fourier Transforms
Spinning Out Sine and Cosine
Boole Differential Equation with Continued Fractions
Mapping Rectangles by the Elementary Transcendental Functions
How the Trigonometry Functions Are Related
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