Handy methods of geodetic astronomy for land surveyors (1921)
Gribble, Theodore Graham · London, J. D. Potter · leaf 10
. Sin. Latitude X R (9) Sin. Altitude = Curve J is the Azimuth of Ditto. (10) Sin. Azimuth =Curve K is the Hour-Angle of Ditto. (11) Cos. Hour-Angle = Tan. Declination Wherever Polaris in the Northern, or one of the stars near the Poleof the Southern Hemisphere can be seen, this observation is one… … 10 The spherical triangle, Fig. 1, requiring solution consists in all cases ofthe Co-Latitude s, the Co-Declination z, and the Co-Altitude p. Z beingthe Zenith, P the Pole and S the Sun or Star. The angle at P is the Hour-Angle, the angle at Z is the Azimuth orits supplement. The angle at S is that…
Geodesy · Surveying
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