Discussion @ 1159. Fence @ Timus Online Judge

Why cannot we use asin, atan, or acos?? [just asinl .. ] (-)

Posted by Miguel Angel 1 Dec 2002 05:21

Re: Why cannot we use asin, atan, or acos?? [just asinl .. ] (-)

Posted by Илья Гофман (Ilya Gofman) 1 Dec 2002 17:21

Actually Pascal&Delphi have only ArcTan(x).
ArcSin(x) is calculted as
ArcSin(x) := ArcTan(x/sqrt(1-sqr(x)));
ArcCos(x) := ArcTan(sqrt(1-sqr(x))/x);
That is.

I mean for C++, anyway thanks :) (-)

Posted by Miguel Angel 2 Dec 2002 03:01

> Actually Pascal&Delphi have only ArcTan(x).
> ArcSin(x) is calculted as
> ArcSin(x) := ArcTan(x/sqrt(1-sqr(x)));
> ArcCos(x) := ArcTan(sqrt(1-sqr(x))/x);
> That is.

Discussion of Problem 1159. Fence