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Demonstrations 1 - 20 of 193
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The Three-Gap Theorem
Updated this month
Gielis's Superformula for Complex Shapes
Trigonometric Reference Angles
Binomial Coefficients in the Multiple-Angle Tangent Formula
Area of an Inscribed Triangle in Terms of the Product of Its Sides
Visual Derivation of a Trigonometric Identity
Trigonometric Functions of Commutative Matrices
Area Among Four Curves In A Square
The Sum of Tangent and Cotangent Is at Least 2
Refraction in a Triangular Prism
Refraction in a Biconvex Spherical Lens
Lissajous Figures from Projections of Points on Circles
Factoring the Even Trigonometric Polynomials of A269254
Wrapping the Number Line around the Unit Circle
Area of a Triangle Using Sine
Solid and Dihedral Angles of a Tetrahedron
Directed Angles and Their Types
Measure of the Angle between Two Straight Lines
Multiple Angle Formulas for Sine and Cosine
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