 | Adrien Marie Legendre - 1836 - 394 ページ
...CIRCUMFERENCE. I. For the purposes of 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,... | |
 | William Grier - 1836 - 384 ページ
...sides, that which stands at the angular point is read in the middle. Thus DAE. 57. The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; and each degree into 60 minutes, each minute into 60 seconds, and so on. Hence a semicircle contains... | |
 | Mrs. L. H. Tyler - 1837 - 302 ページ
...of the 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...degree into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. These divisions are usually expressed by signs : thus,... | |
 | Charles Davies - 1837 - 342 ページ
...accuracy. 41. For the purposes of 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... | |
 | James Thomson (LL.D.) - 1837 - 296 ページ
...months after it follow the rule. r 48 TABLES. TABLE OF THE DIVISION OF THE CIRCLE. The circumference of 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.... | |
 | Hugh Murray - 1837 - 612 ページ
...in diameter, and consequently nearly 24,870 miles in circumference. In geometry, the circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each of these into 60 equal parts, called minutes, and so on. A degree, therefore, of any circle... | |
 | Luther Ainsworth - 1837 - 306 ページ
...many equal parts is every circle supposed to be divided ? A. Every circle, whether great or small, is supposed to be divided into 360 equal parts, called degrees. Each degree is also subdivided into 60 minutes, and each minute into 60 second!*. 245 MENSURATION OF SUPERFICIES.... | |
 | Jeremiah Day - 1838 - 416 ページ
...measuring the latter, a circle is introduced. The periphery of every circle, whether great or small, is supposed to be divided into 360 equal parts called degrees, each degree into 60 minutes, each minute into 60 seconds, each second into 60 thirds, &c., marked with the characters °,... | |
 | Thomas Kerigan - 1838 - 804 ページ
...hemisphere, and the other, the southern hemisphere. — The equator, like all other great circles, is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute into , 60 equal parts, called seconds, and so on. The Meridian of any place on the earth... | |
 | Charles Davies - 1838 - 292 ページ
...used in estimating latitude and longitude, and also in measuring the motions of the heavenly bodies. Every circle is supposed to be divided into 360 equal parts, called degrees. TABLE. 60 seconds " make 1 minute, marked '. 60 minutes - - 1 degree, - - °. * 30 degrees - - 1 sign,... | |
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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. 
