
Re: cosine is Y = 1.44x^2 + .44x + 1 Re: sine is Y= 1.44x^2 + 2.44x
Posted:
Feb 25, 2017 3:31 AM


hm, w0w, wierd, why?
> atan2(Y,X) = slope of angle between hypothenuse and > adjacent in a right triangle where > oposite has length Y and adjacent has > length X plus complication that the > lengths can have a negative sign. > https://en.wikipedia.org/wiki/Atan2 > > what is atan2(.,.) ?? > > > > asin(X) = atan2(X, sqrt(1X^2)) > > > > acos(X) = atan2(sqrt(1X^2), X)

