public class Vaja21{
	public static void main(String[]args){
		double rez1 = Math.sin(Math.PI/6);
		double rez2 = Math.sqrt(49);
		double rez3 = Math.log(Math.E);
		double rez4 = Math.sqrt(25) / Math.sin(Math.PI);
		System.out.println(rez1 + "\t" + rez2 + "\t" + rez3 + "\t	" + rez4);
	}
}