If I've helped you, please consider supporting my mathy pursuits: https://ko-fi.com/trigonography
I'm the Trigonographer at trigonography.com, spotlighting my various "proofs without words" for trigonometric identities and relations.
I'm also the Hedronometer at hedronometry.com, compiling information about the dimensionally-enhanced trigonometry of tetrahedra.
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Sep 24 '14