| 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,... | |
| John Lee Comstock - Physics - 1836 - 310 pages
...already seen, the sun 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
...plane of a circle. (21.) DBF. 4. Every circle, from the smallest to the largest, is conceived to be **divided into 360 equal parts, called degrees ; each...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,... | |
| Commissioners of National Education in Ireland - Measurement - 1837 - 290 pages
...circumference pf every circle is generally divided into 360 equal parts, called degrees ; and every **degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.** The angles are measured by the number of degrees contained in the arcs which subtend them ; thus, if... | |
| James Thomson (LL.D.) - Arithmetic - 1837 - 296 pages
...every circle is supposed to be divided into 360 equal parts, called degrees;* each degree is subdivided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds.** MISCELLANEOUS TABLE. 12 articles =1 dozen „ ,-. ( 12 dozen = 1 gross 6 6core or 120" = i.ong 20 articles... | |
| Adrien Marie Legendre - Geometry - 1838 - 376 pages
...rectilineal triangles. DIVISION OF THE CIRCUMFERENCE. I. For the purposes of trigonometrical calculation, **the circumference of the circle is divided into 360...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... | |
| Thomas Holliday - Surveying - 1838 - 404 pages
...their opening or inclination to each other. 2. The circumference of every circle is supposed to be **divided into 360 equal parts, called degrees; each...into 60 equal parts, called minutes; and each' minute** again into 60 equal parts, called seconds. The angles are measured by the number of degrees, &c., cut... | |
| Dana Pond Colburn - Arithmetic - 1859 - 288 pages
...large or small, is suppose^ to contain 360 equal parts, called DEGREES ; each degree is divided into G0 **equal parts, called MINUTES; and each minute into 60 equal parts, called SECONDS.** NOTE.—Tho length of a degree, as well as that of its subdivision?, varies with the size of the circle.... | |
| Dana Pond Colburn - 1860 - 390 pages
...l.irge or small, is supposed to be divided into 3t10 equal p:\rts called degrees. Each degree is divided **into 60 equal parts, called minutes, and each minute into 60 equal parts, called** ccconds. (g.) A degree is to be regarded simply as the S60th part of the circumference of the circle... | |
| Josiah Lyman - Electronic book - 1862 - 92 pages
...the fourth part of a circle; as AFB, Fig. 1. 8. The circumference of every circle is supposed to be **divided into 360 equal parts, called degrees ; each...and each minute into 60 equal parts, called seconds,** &c. 9. The Measure of an angle is the arc intercepted between the two lines that form the angle ; and... | |
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