A treatise on surveying and navigation: uniting the theoretical, practical, and educational features of these subjects (1857)
Robinson, Horatio N[elson], 1806-1867. [from old catalog] · Cincinnati, J. Ernst; Toledo, Anderson, Burr, & co. · leaf 109
angle together and take the half sum.From the half sum, subtract the suns polar distance, thus finding theremainder. 2. Add the sin-complement of the co-altitude, the sin-complement ofthe co-latitude, the sine of the half sum, and the sine of the remainder.The sum of these four logarithms divided… … EXAMPLES. In latitude 39° 6 20 north, when the suns declination was 12°3 10 north, the true altitude of the suns center was observed tobe 30° 10 40, rising. What was the true bearing of the sun, or itsazimuth ? 90° 90 90 Lat. 39 6 20 Alt. 30. 10. 40 Dec. 12° 3 10 co-Lat. 50 53 40 co-Alt. 59. 49. 20…
Surveying · Navigation
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