How to access a local variable globally (Java)

How can I call the variables in public void angles() to public void draw(Pen p)?

I'm also aware that there might be other flaws in my program since this is still a new concept to me, so any other pointers are greatly appreciated (This is only a part of the program).

Code if needed:

public void angles(){
   double a;
   double b;
   double c; 
   double angle1;
   double angle2;
   double angle3;

   side a = length(xPos, yPos, x2, y2);
   side b = length(x2, y2, x3, y3);
   side c = length(xPos, yPos, x3, y3);

   angle1 = Math.asin(double ((-((a^2)/(2bc)))+((b)/(2c))+((c)/(2b))));
   angle2 = Math.asin(double ((-((b^2)/(2ac)))+((a)/(2c))+((c)/(2a))));
   angle3 = Math.asin(double ((-((c^2)/(2ab)))+((a)/(2b))+((b)/(2a))));

}

public void draw (Pen p){
   p.up();
   p.move(xPos, yPos);
   p.down();
   p.turn(angle1); pen.move(a);
   p.turn(angle2); pen.move(b);
   p.turn(angle3); pen.move(c);
}