## τ

10 Secret Trig Functions Your Math Teachers Never Taught You
posted by the man of twists and turns on Mar 18, 2016 - 47 comments

## Fake 3D Until You Make 3D

Louis Gorenfeld lovingly explores the mathematics and techniques behind early, pseudo-3D games.
posted by gilrain on Jan 9, 2015 - 16 comments

## Pythagasaurus

Pythagasaurus is the fabled Tyrannosaurus practiced in the skills of trigonometry and long division. Apparently he knows all eight numbers. [Via]
posted by homunculus on Nov 11, 2011 - 9 comments

## A glorified geometry with superimposed computational torture

Trigonometric Delights. This book is neither a textbook of trigonometry—of which there are many—nor a comprehensive history of the subject, of which there is almost none. It is an attempt to present selected topics in trigonometry from a historic point of view and to show their relevance to other sciences. It grew out of my love affair with the subject, but also out of my frustration at the way it is being taught in our colleges.
posted by Wolfdog on Mar 24, 2010 - 18 comments

## I want my MathTV

MathTV is a real problem solver for many. It is also found on YouTube, and is free. Here is some background.
posted by Brian B. on Mar 21, 2009 - 8 comments

## Sine of the times

Norman Wildberger's New Trigonometry Dr Norman Wildberger has rewritten the arcane rules of trigonometry and eliminated sines, cosines and tangents from the trigonometric toolkit. The First chapter of his new book, Divine Proportions, is online (.pdf).
posted by Kwantsar on Sep 25, 2005 - 21 comments

## 64=65?

64=65? there must be some kind of trick to this, right?
posted by pyramid termite on Aug 18, 2004 - 30 comments

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