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Trigonometric Functions
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Demonstrations 1  20 of 167
Lill's Angle Trisection
New this month
Shortest Path between Two Points in the Unit Disk Reflecting off the Circumference
Updated this month
The Plemelj Construction of a Triangle: 8
The Plemelj Construction of a Triangle: 7
The Plemelj Construction of a Triangle: 1
Trigonometric Fitting and Interpolation
Geometric Solution of a Trigonometric Equation
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
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