On Sunday 03 April 2011 13:32:57 Brij Bhushan Vij wrote: > Pierre, Paul Rittman sirs: > >A number you may find useful is 206264.8. > > Is this value for Pi used anywhere in day-to-day life. Any reference > avaialable. Most enineering/standard reference books maintain and use the
I said "approximately". For the purpose I use the number most (which is deciding whether to use the delta or the bearing and distance when plotting a curve), I use the loose approximation 200000. The angles I deal with are given in degrees, minutes, and seconds, not huge numbers of seconds, so I convert them to decimal degrees, then to radians, and usually need to do this only when there is neither a delta nor a chord bearing. Pierre -- Don't buy a French car in Holland. It may be a citroen.
