 | Adrien Marie Legendre - 1830 - 344 σελίδες
...of trigonometrical calculations, the circumference of the circle is conceived to be divided into 36O equal parts, called degrees ; each degree into 60...and each minute into 60 equal parts, called seconds. The semicircumference, or the measure of two right angles, contains 1 80 degrees ; the quarter of the... | |
 | Francis Joseph Grund - 1830 - 274 σελίδες
...circles, described with any radius between their legs. The circumference is for this purpose divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each minute again into 60 equal parts, called seconds, &c. 16. The magnitude of an angle does not depend... | |
 | John Lee Comstock - 1831 - 312 σελίδες
...Constellation, and near the star a. Each of the 12 signs of the zodiac is divided into 30 smaller partSj called degrees; each degree into 60 equal parts, called minutes, and each minute into 60 parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign having... | |
 | Ira Wanzer - 1831 - 408 σελίδες
...Astronomers, Navigators, &c. Note 2. — The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes ; each minute into 60 seconds, and each second into 60 thirds, &c. 16. Of Particulars. 12 Particular... | |
 | John Lee Comstock - 1832 - 308 σελίδες
...another constellation, and near the star a. Each of the 12 signs of the zodiac is divided into 30 smaller parts, called degrees ; each degree into 60 equal parts, called minutes, and each minute into 60 parts, called seconds, The division of the zodiac into signs, is of very ancient date, each sign having... | |
 | Joseph Allen - 1832 - 128 σελίδες
...360 equal parts, called degrees, and each degree contains about 09 A miles. Each degree is divided into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds. Questions for Review. How many degrees are there in the circumference of the earth ? How many miles... | |
 | Olinthus Gregory - 1834 - 484 σελίδες
...the next figure.) 3. The circumference of a circle is supposed to be divided or to be divisible into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each of these into 60 equal parts, called seconds ; and so on to the minutest possible subdivisions.... | |
 | Francis Joseph Grund - 1834 - 202 σελίδες
...described with any radius between their legs. The circumference is, for this purpose, divided into 360 equal parts, called degrees; each degree into 60 equal parts, called minutes; each minute, again, into 60 equal parts, called seconds, &c. 16. The magnitude of an angle does not... | |
 | William Smyth - 1834 - 94 σελίδες
...equal radii. 10. The entire circumference of every circle, whether great or small, is divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds, each second into 60 equal parts called thirds, &c.... | |
 | Mary Somerville - 1835 - 532 σελίδες
...axis of the ellipse. NOTE 49. p. 12. Ninety degrees. A circle is divided into 3fiO equal parts, or degrees; each degree into 60 equal parts, called minutes...and each minute into 60 equal parts, called seconds. It is usual to write these quantities thus, 15° 16' 10'', which means fifteen degrees, sixteen minutes,... | |
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The 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. 
