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Trigonometric Functions
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Demonstrations 1  20 of 172
Radians on the Circle of a Ferris Wheel
New this month
Archaic Trigonometry
Morphing Cartesian to Polar Coordinates
Factoring the Even Trigonometric Polynomials of A269254
Integrating and Differentiating Trigonometric Signals
Lill's Angle Trisection
Shortest Path between Two Points in the Unit Disk Reflecting off the Circumference
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
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