Wow. You people went to crap schools. We got the derivation of modern trig functions w/ maclauren/Taylor series in 9th grade (though yeah... that was the "har

Wow. You people went to crap schools. We got the derivation of modern trig functions w/ maclauren/Taylor series in 9th grade (though yeah... that was the "hard core math track".) And a year of proofs and derivations in 11th grade. Quaternions and their application in physics was 12th grade.