2010年2月25日星期四
public class HolloWorld {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
int i,x;
double pi;
pi=Math.PI;

System.out.println("pi="+pi);

System.out.println("cos(0)="+Math.cos(0));
System.out.println("cos(pi/4)="+Math.cos(pi/4));
System.out.println("cos(pi/2)="+Math.cos(pi/2));
System.out.println("cos(3pi/2)="+Math.cos(3*pi/2));
System.out.println("cos(2pi)="+Math.cos(2*pi));

System.out.println("sin(0)="+Math.sin(0));
System.out.println("sin(pi/4)="+Math.sin(pi/4));
System.out.println("sin(pi/2)="+Math.sin(pi/2));
System.out.println("sin(3*pi/2)="+Math.sin(3*pi/2));
System.out.println("sin(2*pi)="+Math.cos(2*pi));
}
}
pi=3.141592653589793
cos(0)=1.0
cos(pi/4)=0.7071067811865476
cos(pi/2)=6.123233995736766E-17
cos(3pi/2)=-1.8369701987210297E-16
cos(2pi)=1.0
sin(0)=0.0
sin(pi/4)=0.7071067811865475
sin(pi/2)=1.0
sin(3*pi/2)=-1.0
sin(2*pi)=1.0