 | Abel Flint - 1835 - 368 sider
...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... | |
 | Euclid - 1835 - 540 sider
...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°... | |
 | Adrien Marie Legendre - 1836 - 394 sider
...CIRCUMFERENCE. I. For the purposes of trigonometrical calculation, the cir cumference of the circle is divided into 360 equal parts, called degrees ;...each minute into 60 equal parts, called seconds. The semicircumference, or the measure of two right angles, contains 180 degrees ; the quarter of the circumference,... | |
 | John Playfair - 1836 - 148 sider
...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,... | |
 | Charles Davies - 1837 - 342 sider
...utmost accuracy. 41. For the purposes of trigonometrical calculations, the circumference of the circle is divided into 360 equal parts, called degrees ;...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... | |
 | Mrs. L. H. Tyler - 1837 - 302 sider
...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 - 1837 - 290 sider
...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 the... | |
 | James Thomson (LL.D.) - 1837 - 296 sider
...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... | |
 | Euclides - 1838 - 264 sider
...subtended by one of these, as the angular unit. Each degree is moreover supposed to be subdivided into 00 equal parts, called minutes; and each minute into 60 equal parts, called seconds, and so on. The angle subtended by any number of these will, therefore, be some fractional part of the... | |
 | Thomas Kerigan - 1838 - 804 sider
...circles of the spheres, is divided into 360 equal parts, called degrees ; each degree is divided into GO equal parts, called minutes, and each minute into 60 equal parts, called seconds. ,57 The Meridian of any place on the earth, is a semicircle which passes through that place, cuts the... | |
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The 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, etc. 
