 | Robert Gibson - 1811 - 580 σελίδες
...degree, that is, miles. The lines of tangents, seruitangents, and secants serve to find the centres and poles of projected circles in the stereographical projection of the sphere. Tlte line of sinesis principally used for the orthographic projection of the sphere. The lines of latitudes... | |
 | George Adams - 1813 - 648 σελίδες
...difference of longitude. The lines of tangents, semitangents, and secants serve to .find the centres and poles of projected circles in the stereographical projection of the sphere. The line of sines is principally used for the orthographic projection of the sphere; but as the application... | |
 | Robert Gibson - 1832 - 290 σελίδες
...equatorial degree, that is, miles. The lines of tangents, semitangents and secants serve to find the centres and poles of projected circles in the stereographical projection of the sphere. The line of sines is principally used for the orthographic projection of the sphere. The lines of latitudes... | |
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The graduated line of chords is necessary, in order to show the latitudes ; the line of longitude shows the quantity of a degree on each parallel in sixtieth parts of an equatorial degree, that is, miles. The lines of tangents, semitangents and secants... 