 | James Atkinson - Navigation - 1765 - 504 pages
...; but if of one Name, it's the Complement of 'the Declination. ' 4. The Angle PZO the Sun's Azimuth from the North, in North Latitude; but from the South, in South Latitude. 5'. The Angle ZPQ the Hour of the Day from Noon. To project it Stereografhically on the Plane of the... | |
 | James Atkinson - Navigation - 1770 - 514 pages
...Eafterly, had it been in the Forenoon. Or thus, by the following Rules. 1. Always count both Azimuths from the North, in North Latitude ; but from the South in South Latitude. 2. The lefs Azimuth fubtraftfrom thegieater, gives the Variation. 3. Placing both the Azimuths (before... | |
 | Andrew Wakely - Compass - 1780 - 350 pages
...Sine of the Remainder to a fifth Sine ; againft which on the Line of verfed Sines is the Sun's A2imuth from the North in North Latitude, but from the South in South Latitude. 4. To find the Hour, thefe are the two Proportions which follow ; Fir/1, As Radius is to the Sine Complement... | |
 | Nautical astronomy - 1821 - 708 pages
...will be the log. co-sine of half the true azimuth, which being doubled will give the true azimuth, reckoned from the north in north latitude, but from the south in south latitude. ğ In observations of the altitude of the sun'< loiter limb (by afore enervation) it is uĞuğl to... | |
 | Nathaniel Bowditch - Nautical astronomy - 1826 - 732 pages
...be Ihe log. co-sine of half the true a/.imulh, which I, ring doit* bled will give the true azimuth, reckoned from the north in north latitude, but from the south in south latitude. * In observations of the altitude of the sun's lower limb (by a fore-otefrvmion) it in nstinl to add... | |
 | Thomas Kerigan - Nautical astronomy - 1838 - 804 pages
...greatest eastern or western azimuth (according as it may be situated with respect to the meridian) ; to be reckoned from the north in north latitude, but from the south in south latitude. Then, From the logarithmic sine of the latitude (the index being increased by 10), subtract the logarithmic... | |
 | Janet Taylor - Nautical astronomy - 1842 - 592 pages
...of half the sun's true azimuth, to be reckoned from the south in north latitude, and from the north in south latitude, towards the east in the forenoon, and towards the west in the afternoon. Then, if the true and observed azimuths be both reckoned from the same point, thcir differenee is the... | |
 | Nathaniel Bowditch - 1846 - 854 pages
...will be the log. cosine of half the true azimuth, which, being doubled, will give the true azimuth, reckoned from the north in north latitude, but from the south in south latitude. EXAMPLE I. In latitude 51° 32' N., the sun's true altitude was found to be 39° 28', hie decimation... | |
 | Janet Taylor - Nautical astronomy - 1851 - 674 pages
...of half the sun's true azimuth, to be reckoned from the south in north latitude, and from the north in south latitude, towards the east in the forenoon, and towards the west in the afternoon. Then, if the true and observed azimuths be both reckoned from the same point, their difference is the... | |
 | Commerce - 1858 - 808 pages
...greatest eastern or western azimuth (according as it may be situated with respect to the meridian) ; to be reckoned from the north in north latitude, but from the south in south latitude. Then from the sine of the latitude (the index being .increased by 10) subtract the fine of the star's... | |
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... reckoned from the north in north latitude, but from the south in south latitude. ğ In observations of the altitude of the sun'< loiter limb (by afore enervation) it is uĞuğl to ğ