I'm trying to make a shotgun and this is happening

Newbie & Debugging Questions
#1

I’m trying to make a shotgun and when i shoot at a certain angle all the bullet go together into a line

http://s16.postimg.org/ceybyieud/ssssssss.png

degree+= 0.05f;
		bullets.addBullet(new Bullet(GameWindow.getViewportWidth()/2, GameWindow.getViewportHeight()/2, new Vector2(10,10), 0, new Vector2((float)(100+Math.cos(degree)*360),(float)(100+Math.sin(degree)*360))), false, 1);
		bullets.addBullet(new Bullet(GameWindow.getViewportWidth()/2 + 20, GameWindow.getViewportHeight()/2 -20, new Vector2(10,10), 0, new Vector2((float)(100+Math.cos(degree)*360),(float)(100+Math.sin(degree)*360))), false, 1);
		bullets.addBullet(new Bullet(GameWindow.getViewportWidth()/2 - 20, GameWindow.getViewportHeight()/2 +20, new Vector2(10,10), 0, new Vector2((float)(100+Math.cos(degree)*360),(float)(100+Math.sin(degree)*360))), false, 1);