using System;

public class Program

{

    public static void Main()

    {

        double paso = 0.001, ec1 = 0, ec2 = 0;

        for (double i = -10000; i <= 10000; i = i + paso)

        {

            ec1 = Math.Pow((Math.Sin(i/10)),2) - Math.Cos(i/10);

            if (ec1 * ec2 < 0)

            {

                Console.WriteLine("La solución es: " + i );

            }

            ec2 = ec1;

        }

    }

}