I found a few other interesting little notes on his site: http://iq0.com/notes/trig.html http://iq0.com/notes/trig.html All you need to know about Trignometry

I found a few other interesting little notes on his site: http://iq0.com/notes/trig.html http://iq0.com/notes/trig.html All you need to know about Trignometry http://iq0.com/notes/frobenius.html http://iq0.com/notes/frobenius.html The Frobenius-Burnside Counting Formula http://iq0.com/notes/geometric.html http://iq0.com/notes/geometric.html Sum of a Geometric Series