I don't really have a personal blog (just how many should I have?) but I want to stash this somewhere on the web.
I teach Precalculus, and one of the key ideas for explaining the trigonometric functions is the unit circle ( with a radius of 1.) Tolkein fans might appreciate how appropriate this poem is:
The One Ring
(Great Circle Of Power,
Math Student's Bane)
One Circle to rule them all,
One ring to find them,
Unit circle to calculate all,
and in trigonometry bind them.
In the study of Precalculus where the functions lie.
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