Safi 1996. n Safi as viewed from the northwest looking to the southeast.
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Safi 1996
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Transcript of Safi 1996. n Safi as viewed from the northwest looking to the southeast.
Safi 1996
Safi 1996
Safi as viewed from the northwest looking to the southeast.
Safi 1996
The “Map”. The POST. And the Total Field
Station.
Safi 1996
The “Map”. The POST. And the Total Field
Station.
Safi 1996
POST to 287N measured.
Safi 1996
287N to POST. 986.1550m or
0.6128mi
Safi 1996
Angle 287N-POST-289N measured.
Safi 1996
289N to POST. Distance?
Safi 1996
POST to B measured.
Angle B-POST-289N measured.
POST to 289N missing
Safi 1996
289N to 287N computed from British survey map coordinates.
Distance is 1842.77m or 1.1450mi.
Safi 1996
Law of cosines:
Law of sines:
)(Cos2222 Cabbac
c
(C)
b
B
a
A Sin
)(Sin
)(Sin
Safi 1996
Trig supplies remaining sides and angles.
289N to POST distance is 1314.9738m or 0.8171mi.
Safi 1996
POST is at intersection of circles.
(135610.32, 123322.23)
Safi 1996
A little more trig gives the location of B and the orientation of the segment POST-B.
Safi 1997
Remeasured in 1997.
POST to 289N was 1317.3132m.
POST to 287N was 986.1419m.
Safi 1997
287N to 289N– -2.0292m/1842.77m– -1.1012m/km– -69.7703in/mile– 0.11% error
POST to 287N– 1.32cm/986.1550m– 1.3385cm/km– 0.85in/mile– 0.0013% error
