Question

How to use atan() function to compute the principal value of the arc tangent of N in C#

Answer 1

using System;

namespace ConsoleApplication_C_Sharp
{
    class Program
    {
        static void Main(string[] args)
        {
            double zero = 0;
            double Infinity = 1 / zero;

            Console.WriteLine("Math.Atan(1.0) = {0}", Math.Atan(1.0));
            Console.WriteLine("Math.Atan(-1.0) = {0}", Math.Atan(-1.0));
            Console.WriteLine("Math.Atan(0.0) = {0}", Math.Atan(0.0));
            Console.WriteLine("Math.Atan(-0.0) = {0}", Math.Atan(-0.0));
            Console.WriteLine("Math.Atan(Infinity) = {0}", Math.Atan(Infinity));
        }
    }
}


/*
run:

Math.Atan(1.0) = 0.785398163397448
Math.Atan(-1.0) = -0.785398163397448
Math.Atan(0.0) = 0
Math.Atan(-0.0) = 0
Math.Atan(Infinity) = 1.5707963267949

*/

 

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