Donut math - How donut.c works

In a highly technical post like this I'm never sure how well I'm explaining it. I tried to keep things at the high school trig/algebra II level for this one. I've proofread it a billion times now but is there anything I can clarify?

I'm starting to grow even more jealous, this guy has some serious knowledge of his craft

Would you really need to see a resume before hiring this guy?

If you like deconstructing obfuscated c, then you may also enjoy <i>Obfuscated C And Other Mysteries</i> by Don Libes. In addition to coding advice, it looks at some of the top entries from the Obfuscated C Contest, 1984-1991.<p><a href="http://www.amazon.com/gp/product/0471578053/" rel="nofollow">http://www.amazon.com/gp/product/0471578053/</a><p>Also appears to be available as a reprint:<p><a href="http://www.cafepress.com/libes.43758522" rel="nofollow">http://www.cafepress.com/libes.43758522</a><p>Obfuscated C Contest website:<p><a href="http://www.ioccc.org/" rel="nofollow">http://www.ioccc.org/</a>

As a fellow Yahoo good to still see people like andy *STILL around

In the 90's, I always wondered how this stuff worked.