| Joseph Harris - Astronomical models - 1732 - 236 pages
...placed, and the opppfite one is the Southern Hemifphere. The Aftronomers divide all Circles into 360 **equal Parts called 'Degrees, each Degree into 60 equal Parts called Minutes,** each Minute into 60 Seconds, &c. But befides this Divifion into Degrees, the Equir noftial is commonly... | |
| Benjamin Donne - 1796 - 120 pages
...proportion which angles bear to each other, fuppofe the circumference of every circle to be divided into 360 **equal parts, called Degrees ; each degree into 60 equal parts, called minutes** ; each minute into 60 equal parts named feconds, &c. Ar. B. Sometimes the circumference of a circle... | |
| William Taylor (teacher of the mathematics.) - Arithmetic - 1800 - 556 pages
...• half the diameter is called the Radius. 8. The circumference of every 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, &c. Any part of the the circumference is called an... | |
| John Bonnycastle - Trigonometry - 1806 - 464 pages
...legs, and having the angular point for its centre. 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 equal parts, called seconds ; &c. So that a semicircle, or half the circumference,... | |
| Astronomy - 1808 - 290 pages
...Ecliptic. This circle we suppose to be divided into 12 equal parts, called Signs ; each sign . into 30 **equal parts, called Degrees ; each degree into 60 equal parts called Minutes ; and** every minute into 60 equal parts, called Seconds; so that a second is the 60th part of a minute ; a... | |
| James Ferguson - Astronomy - 1809 - 574 pages
...ecliptic. tic. This circle we suppose to be divided into 12 equal parts, called signs ; each sign into 30 **equal parts, called degrees; each degree into 60 equal parts, called minutes; and** each minute into 60 into 60 equal parts, called seconds : so that a second Plate I. is the 60th part... | |
| Thomas Keith - Navigation - 1810 - 478 pages
...measure of the angle ABC. (H) 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 equal parts called seconds. The angles are measured by the number of "egrees cut... | |
| Francis Nichols - Plane trigonometry - 1811 - 162 pages
...subtending the same angle ABC. 5. COR. 4. Hence, if a circle of any radius whatever be divided into 360 **equal parts, called degrees, each degree into 60 equal parts, called minutes;** each minute into 6O equal parts, called seconds, &c., the number of degrees, minutes, and seconds,... | |
| Thomas Keith - Astronomy - 1811 - 388 pages
...14' 43" and its declination 80° "15' 44" north. $ 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 equal parts called seconds, &c. ; a degree is, therefore, only a relative idea,... | |
| John Lee Comstock - Physics - 1813 - 448 pages
...constellation, and near trfB star a. 762. 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... | |
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