This is a C# Program to find the value of cos(x).
Problem Description
This C# Program Finds the Value of Cos(x).
Problem Solution
Here the cos value is found without using the library math function.
Program/Source Code
Here is source code of the C# Program to Find the Value of Cos(x) . The C# program is successfully compiled and executed with Microsoft Visual Studio. The program output is also shown below.
/* * C# Program to Find the Value of Cos(x) */ using System; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { for (double d = 0; d < 6.0; d += 0.5) { Console.WriteLine("The cosine of {0} = {1}", d, Math.Cos(d)); Console.WriteLine("Calculated cosine of {0} = {1}", d, cos(d)); Console.WriteLine(); } Console.ReadKey(); } static double cos(double x) { double p = x * x; double q = p * p; return 1.0 - p / 2 + q / 24 - p * q / 720 + q * q / 40320 - p * q * q / 3628800; } } }
Program Explanation
In this C# program, library function defined in <math.h> header file is used. The following formula is used to compute the value of Cos(x)
Cos(x) = 1.0- p /2+ q /24- p * q /720+ q * q /40320- p * q * q /3628800
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Runtime Test Cases
The Cosine of 0 = 1 Calculated Cosine of 0 = 1 The Cosine of 0.5 = 0.877582561890373 Calculated Cosine of 0.5 = 0.877582561889864 The Cosine of 1.5 = 0.54030230586814 Calculated Cosine of 1.5 = 0.540302303791887 The Cosine of 2.0 = 0.0707372016677029 Calculated Cosine of 2.0 = 0.0707369341169085
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