Half Angle Tangent Formulas (visual proof; trigonometry)

This is a short, animated visual proof of the half angle formula for the tangent using Thales triangle theorem and similar triangles. This theorem gives two ways to compute the tangent of a half angle, like tan(t/2). #mathshorts #mathvideo #math #trigonometry #triangle #manim #animation #theorem #pww #proofwithoutwords #visualproof #proof #circle #thalestheorem #similartriangles #semicircle #identity #halfangle #trigidentity #trig

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This animation is based on a proof due to R.J. Walker from the May 1942 issue of The American Mathematical Monthly (https://doi.org/10.2307/2303100) page 325.

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