The derive of sine is cosine (visual proof)

http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/DerisineMD.html
[url=http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/DerisineMD.html]http://dmentrard.free.fr/GEOGEBRA/Maths/Export5/DerisineMD.html[/url]
– Daniel Mentrard

Information: The derive of sine is cosine (visual proof)