| Mary Somerville - Astronomy - 1835 - 532 pages
...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,... | |
| Euclid - 1835 - 540 pages
...II. The circumference of a circle is supposed to be divided into 360 equal parts called degrees, and **each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds,** &c. A degree is marked thus, ° ; a minute thus, ' ; a second thus,"; and so on: for example, 57°... | |
| Abel Flint - Geometry - 1835 - 368 pages
...circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and **each degree into 60 equal parts, called minutes ;...and each minute into 60 equal parts, called seconds** ; and these into thirds, &c. NOTE. Since all circles are divided into the same number of degrees, a... | |
| John Lee Comstock - Physics - 1835 - 308 pages
...neai 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** GO parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign... | |
| John Lee Comstock - 1835 - 308 pages
...neai 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** (50 parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign... | |
| John Playfair - Geometry - 1836 - 148 pages
...The circumference of a circle may be supposed to be divided into 360 equal parts called degrees ; and **each degree into 60 equal parts called minutes, and each minute into 60 equal parts called seconds,** &c. And as many degrees, minutes, seconds, &c. as are contained in any arc, of so many degrees, minutes,... | |
| Adrien Marie Legendre - Geometry - 1836 - 394 pages
...trigonometrical calculation, the cir cumference 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.** The semicircumference, or the measure of two right angles, contains 180 degrees ; the quarter of the... | |
| John Lee Comstock - Physics - 1836 - 308 pages
...appears to move Each of the 12 signs of the zodiac is divided (nto 30 smaller parts, called degrees; **each degree into 60 equal parts, called minutes, and each minute into** BO parts, called seconds.) The division of the zodiac into signs, is of very ancient date, each sign... | |
| Mrs. L. H. Tyler - Astronomy - 1837 - 302 pages
...from the smallest to the largest, is conceived 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.** These divisions are usually expressed by signs : thus, 15° 10' 15" signifies five degrees, ten minutes,... | |
| Charles Davies - Navigation - 1837 - 342 pages
...trigonometrical 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.** As the circumference of a circle may be regarded as a proper measure of angles, having their vertices... | |
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