 | Charles Davies - 1835 - 388 páginas
...calculations, the circumference of the circle is divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. PLANE TR16ONOMETRY. As the circumference of a circle maybe regarded as a proper measure of angles,... | |
 | Charles Guilford Burnham - 1841 - 324 páginas
...every circle is supposed to be divided into 360 equal parts, called degrees; and each degree into 0O equal parts, called minutes; and each minute into 60 equal parts, called seconds; and these into thirds, &c. Hence a semi-circle containi 180 degrees, and a quadrant 90 degrees. 15.... | |
 | Roswell Chamberlain Smith - 1841 - 324 páginas
...through the centre of the earth. 15 CORRESPOH D, [L. eorrespondeo.} To answer to ; communicate with. parts, called minutes, and each minute into 60 equal parts, called seconds. 76. The circumference1 of the earth is a great circle of 360 de prees. On this circle every minute... | |
 | John Gregory - 1842 - 328 páginas
...standard derived from the division of a circle into 360 equal parts, called degrees ; each degree being divided into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds, &c. As angles are proportional to the arcs on which they stand (33.6,) the subdivision of the circumference... | |
 | Joseph Emerson Worcester - 1844 - 362 páginas
...circumference of every circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. " They are marked thus, 23° 28' 16"; ie 83 degrees, 23 minutes, and 16 seconds. The Equator is an... | |
 | Joseph Emerson Worcester - 1844 - 356 páginas
...circumference of every circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called secotuls. They are marked thus, 23° 88' 16"; ie 23 degrees, 28 minutes, and 16 seconds. The Less Circles... | |
 | Scottish school-book assoc - 1845 - 444 páginas
...circle is supposed to be divided into 300 equal parts, called degrees, and each degree is supposed to be divided into 60 equal parts, called minutes, and each...called seconds. Degrees, minutes, and seconds, are distinguished by the following marks : — 7° 3' 24", which is read 7 degrees, 3 minutes, and 24 seconds.... | |
 | Nathan Scholfield - 1845 - 244 páginas
...circle is supposed to be divided into 360 equal parts, called degrees, and each of those degrees is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds ; and so on, to thirds, fourths, &c. These divisions are designated by the following characters, °... | |
 | Nathan Scholfield - 1845 - 542 páginas
...circle is supposed to be divided into 360 equal parts, called degrees, and each of those degrees is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds ; and so on, to thirds, fourths, &c. These divisions are designated by the following characters, 0... | |
 | Ezra Otis Kendall - 1845 - 404 páginas
...that circle. Every circle is considered as divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds. They are marked 0 ' " — thus: 10° 2' 20" — which is read ten degrees, two minutes, and twenty... | |
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Every circumference of a. circle, whether the circle be large or small, is supposed to be divided into 360 equal parts called degrees. Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. 
