Geometry & Trigonometry
6 topics
Topics
Content Ready6
Angle Addition Proofs
Visual Proofs of sin(α+β) and cos(α+β)
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Complex Numbers as Rotation
Why Multiplication by i is a 90° Turn
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Essential Geometry Theorems
Pythagoras, Euclid and the Foundations of Shape
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The Law of Cosines
Generalising Pythagoras to All Triangles
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The Unit Circle & Six Functions
Trigonometry as Circle Geometry
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Trigonometric Functions
The Geometry of Circles and Triangles
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