using System;

public class Program

{

    public static void Main()

    {

        var a = 59.46;

        var expression = -2.30867 * Math.Cos(ToRadiant(a)) + 1.36121 * Math.Sin(ToRadiant(a));

        Console.WriteLine(expression);

    }

    public static double ToRadiant(double degree) 

    {

        return degree * Math.PI / 180;

    }

}