Geometric Proof of the Tangent of Difference Formula

2020-04-10 01:54
This GeoGebra applet provides a visual and geometric proof of the tangent of difference formula. By constructing geometric objects such as circles, rays, orthogonal lines, and polygons, it creates a model containing two angles and their difference. Users can observe the proportional relationships of segment lengths to deeply understand the geometric meaning and derivation process of the trigonomet
Geometric Proof of the Tangent of Difference Formula
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