Math.Atan in c#

Question

Hye

I am having a stupid problem.

As It is Illustrated Tan Inverse(1)==45

In C# It Should Return Math.Atan(1 * Math.PI/180) == 45

but it is not

Its is returning something 0.01743.......

I know the degree to radians etc. so please help me out as it is simple question? what is problem behind it, i never noticed and trusted C# calculation, but i cost me a big problem.

Vulpes · Answer

I've just tried the following code but it seems to be working OK to me: using System; class Test { static void Main() { double degrees = 45; double radians = degrees * Math.PI / 180; double tan = Math.Tan(radians); Console.WriteLine(tan); // 1 double radians2 = Math.Atan(tan); double degrees2 = radians2 * 180 / Math.PI; Console.WriteLine(degrees2); // 45 Console.ReadKey(); } }