using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Проект_4_3_Лаб
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Close();
        }

        double storona (double a, double b, double c)
        {
            double p = (a + b + c) / 2d;
            return (2 * Math.Atan(Math.Sqrt(((p - a) * (p - b)) / p * (p - c))));

            }

        private void button1_Click(object sender, EventArgs e)
        {
            double a = Convert.ToDouble(textBox1.Text);
            double b = Convert.ToDouble(textBox2.Text);
            double c = Convert.ToDouble(textBox3.Text);

            double A = storona (c, b, a);
            double B = storona (c, a, b);
            double C = storona (a, b, c);

            textBox4.Text = Convert.ToString(A);
            textBox5.Text = Convert.ToString(B);
            textBox6.Text = Convert.ToString(C);
        }
    }
}