You might want to check what "180 degrees" means, as illustrated in the diagram, which is a flat representation of a full sphere. Your photograph is probably showing around 25 degrees left and 45 degrees right of forwards, and maybe 30 up and 20 down.
Also, collisions don't necessarily happen head on! That of course is why cockpit view diagrams use either the Hammer of Molinye graticules, that show the full sphere.
G
(163 hours in PA28s, but trying not to add any more, simply because just about anything else in my logbook is more interesting to fly.)
Last edited by Genghis the Engineer; 8th Jun 2018 at 19:50.