Just saw your earlier comment, thank you! 1) Yep, the regular percentage formula is pretty basic. Mostly, I like it because we've overlooked something that's b

Just saw your earlier comment, thank you! 1) Yep, the regular percentage formula is pretty basic. Mostly, I like it because we've overlooked something that's been under our noses for years or decades. What else have we been missing? 2) For trig, check out: http://betterexplained.com/static/articles/intuitive-trigonometry/ http://betterexplained.com/static/articles/intuitive-trigono... The traditional way of showing sine/cosine/tan (as on that page) leaves out the surrounding context where the percentage comes to life. Let me know if that link above clears thins up.