| Augustus De Morgan - 1840 - 166 páginas
...square of the radius by 3-1415927. - The right angle is divided into 90 equal parts called degrea, **each degree into 60 equal parts called minutes, and each minute into 60 equal parts called** seccnde. Thus, 2° 15' 40" means 2 degrees, 15 minutes, and 40 seconds. To find the area of a sector,... | |
| Charles Davies - 1840 - 252 páginas
...angles. For this purpose it is divided into 360 equal parts, called degrees, each degree is divided **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.** The degrees, minutes, and seconds, are marked thus, °, ', " ; and 9° 18' 10", are read, 9 degrees,... | |
| Charles Davies - 1835 - 359 páginas
...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.** PLANE TR16ONOMETRY. As the circumference of a circle maybe regarded as a proper measure of angles,... | |
| Benjamin Franklin Edmands - 1841 - 75 páginas
...2. A DEGREE is the 360th part of a circle, and contains CPJ English miles ; each degree is divided **into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds.** They are marked (°) degrees, (') minutes, (") seconds. The LONGITUDE of a place, is its distance from... | |
| Charles Guilford Burnham - 1841 - 312 páginas
...every circle is supposed to be divided into 360 equal parts, called degrees; and each degree into 0O **equal parts, called minutes; and each minute into 60 equal parts, called seconds;** and these into thirds, &c. Hence a semi-circle containi 180 degrees, and a quadrant 90 degrees. 15.... | |
| Roswell Chamberlain Smith - 1841 - 311 páginas
...degrees, the whole circle of the Zodiac.' 75. Every circle, whether the greatest or least possible, is **divided into 360 equal parts, called degrees, and each degree into 60 equal** 1 PLANET, from planao, G. to wander, means a celestial (4) body, which revolve* about the sun or other... | |
| John Gregory - 1842 - 301 páginas
...derived from the division of a circle into 360 equal parts, called degrees ; each degree being divided **into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds, &c.** As angles are proportional to the arcs on which they stand (33.6,) the subdivision of the circumference... | |
| Charles Davies - 1855 - 324 páginas
...supposed to be divided into 360 equal parts, called degrees ; each degree is supposed to be divided **into 60 equal parts, called minutes ; and each minute into 60 equal parts, called** secondsTRIGONOMETRYDefinitions by the characters ° ' "- For example, ten degrees, eighteen minutes,... | |
| Charles Davies, William Guy Peck - 1855 - 592 páginas
...longer than the sidereal. Kach day is divided into 24 equal parts, called hours ; each hour into GO **equal parts, called minutes ; and each minute into 60 equal parts, called seconds** ; and, according to the kind of day which is thus subdivided, we have mean solar, or sidereal time:... | |
| Hiram Mattison - 1856 - 240 páginas
...circles, whether great or small, are 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.** They are marked respectively thus: Degrees (°), minutes ('), seconds ("). Equilateral? (Derivation?)... | |
| |