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I have my old high school calculus text book and that is definitely how trig was introduced. The proof of Pythagorean Theorem using sin and cos was literally p
by Ensorceled 3y ago
I have my old high school calculus text book and that is definitely how trig was introduced. The proof of Pythagorean Theorem using sin and cos was literally part of my undergrad CALC101 (I remember because my high school teacher demonstrated it for fun so it was a rehash)
- lupire 3y agoWhen were you in Calc 101? Before or after 2009? https://forumgeom.fau.edu/FG2009volume9/FG200925.pdf https://forumgeom.fau.edu/FG2009volume9/FG200925.pdf
- Ensorceled 3y agoBefore. It was clearly circular since the identity was assumed, the calc prof might have acknowledged this at the time.