 | Thomas Keith - Navigation - 1810 - 478 pages
...against O on the chords, &c. ; and any degree of latitude be counted on the chords, there will stand opposite to it, on the line of longitude, the miles...contained in one degree of longitude in that latitude, a degree at the equator being 60 miles. These lines are generally drawn to a larger radius than the... | |
 | John Farrar - Logarithms - 1822 - 244 pages
...numbered with the corresponding figures of the line of tangents. 7. For the line of semi -tangents, lay a ruler on E and the several divisions of the...and note the intersections made on the arc BD. With one foot of the compasses in B, transfer these divisions to the chord BD, numbering them with the corresponding... | |
 | Thomas Keith - Navigation - 1826 - 504 pages
...against 0 on the chords, &c. and any degree of latitude be counted on the chords, there will stand opposite to it, on the line of longitude, the miles...contained in one degree of longitude in that latitude, a degree at the equator being 60 miles. These lines are generally drawn to a larger radius than the... | |
 | John Farrar - Trigonometry - 1833 - 276 pages
...transfer the distances from the centre C to the divisions on the line of tangents, namely, C10, C20, &c., to the line AF, and these will give the divisions...and note the intersections made on the arc BD. With one foot of the compasses in B, transfer these divisions to the chord BD, numbering them with the corresponding... | |
 | John Farrar - Trigonometry - 1833 - 274 pages
...of tangents. 7. For the line of semi-tangents, lay a ruler on _E, and the several divisions of'the arc AD, and the points of intersection with the radius...the measure of one degree at the equator being sixty geographical*miles. 9. For the line of latitude, place a ruler on A and the several divisions of CD,... | |
 | Thomas Keith - 1839 - 498 pages
...against 0 on the chords, &c., and any degree of latitude be counted on the chords, there will stand opposite to it, on the line of longitude, the miles...contained in one degree of longitude in that latitude, a degree at the equator being 60 miles. These lines are generally drawn to a larger radius than the... | |
 | John Farrar - Logarithms - 1840 - 270 pages
...transfer the distances from the centre C to the divisions on the line of tangents, namely, C10, C20,&c., to the line AF, and these will give the divisions...and note the intersections made on the arc BD. With one foot of the compasses' in B, transfer these divisions to the chord BD, numbering them with the... | |
 | Janet Taylor - Nautical astronomy - 1842 - 592 pages
...&c. as in the Fig.; then if any degree of latitude be counted on the line of chords, there will stand opposite to it on the line of longitude, the miles contained in one degree of longitude in that parallel of latitude, a degree at the equator bcing 60 miles. This Une is generally drawn to a larger... | |
 | Janet Taylor - Nautical astronomy - 1851 - 674 pages
...&c. as in the Fig.; then if any degree of latitude be counted on the line of chords, there will stand opposite to it, on the line of longitude, the miles contained in one degree of longitude in that parallel of latitude, a degree at the equator being GO miles. This line is generally drawn to a larger... | |
 | John William Norie - Nautical astronomy - 1852 - 844 pages
...be opposite o on the chords, and any degree of latitude be counted on the chords, there will stand opposite to it, on the line of longitude, the miles...degree of longitude in that latitude ; the measure of a degree at the Equator being CO miles. Itltl- 1 CONSTRUCTION OF THE ON THE PI, A JNIE 5 CAILJB FiS4.... | |
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E, and the several divisions of the arc AD, and the points of intersection with the radius CA, being numbered with the corresponding figures of the arc AD, will be a line of semi-tangents. This line is generally continued as far as the length of the scale... 