using System; namespace Program { 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; } } }
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