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Call the zenith distance north or south, according as the zenith is north or south of the object.
Outline of the Method of Conducting a Trigonometrical Survey, for the ... - Page 181
by Edward Charles Frome - 1850 - 253 pages

## Elements of Plane and Spherical Trigonometry: With Its Applications to the ...

John Radford Young - 1833 - 286 pages
...pole, then we must write south for north, and north for south. Hence the following rule for all cases. Call the zenith distance north or south, according as the zenith is north or south of the object. If the zenith distance and declination be of the same name, that is, both north or both south, their sum...

## Elements of Trigonometry, Plane and Spherical: Adapted to the Present State ...

Charles William Hackley - 1838 - 328 pages
...pole, then we must write south for north, and north for south. Hence the following rule for all cases. Call the zenith distance north or south, according as the zenith is north or south of the object. If the zenith distance and declination be of the same name, that is, both north or both south, their sum...

## An Elementary Treatise on Astronomy: In Four Parts. Containing a Systematic ...

William Augustus Norton - 1839 - 530 pages
...a place, is the arc of the meridian intercepted between the zenith and the celestial equator. It is North, or South, according as the zenith is north, or south of the equator. ZE (Fig. 5) represents the latitude of the station o. 27. The earth's surface, considered...

## A Treatise of Practical Mathematics, Part 2

Andrew Bell - 1842 - 402 pages
...altitude, to find the latitude of the place of observation. 1 Call the true zenith distance of the object north or south, according as the zenith is north or south of the body ; then, when the zenith distance and declination are of the same name, their sum is the latitude...

## An Elementary Treatise on Astronomy: In Two Parts. The First Containing, a ...

John Gummere - 1842 - 516 pages
...the arc of the meridian intercepted between the zenith of the place and the equator. It is said to be north or south according as the zenith is north or south of the equator. Thus ZQ, Fig. 1, is the latitude of the place A, to the north. It follows from the definition...

## A Treatise on Trigonometry, Plane and Spherical: With Its Application to ...

Charles William Hackley - 1851 - 524 pages
...product added or subtracted will produce the declination at the time of meridian transit at the ahip.> Call the zenith distance north or south, according as the zenith is north or south of the object. If the zenith distance and declination be of the same name, that is, both north or both south, their sum...

## Navigation and Nautical Astronomy: The Practical Part, Containing Rules for ...

H. W. Jeans - 1853 - 314 pages
...get the true altitude. Subtract the true altitude from 90° to get the true zenith distance. 4. Mark the zenith distance north or south according as the zenith is north or south of the planet. 5. Proceed then as in Eule XXVIII., Art. 5. November 20, 1853, at 6h 18m AM, mean tune nearly,...

## An Elementary Treatise on Astronomy: In Two Parts. The First Containing a ...

John Gummere, Ezra Otis Kendall - 1854 - 484 pages
...ZQ = ZM + QM = ZM7 - QM = Qra — Zm = Qm7 — Zm7. Hence, calling the zenith distance of the body north or south, according as the zenith is north or south of the body, when the declination of the body and its correct meridian zenith distance are of the same name,...