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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, &c. "
A Treatise on Practical Surveying: Which is Demonstrated from Its First ... - Página 95
por Robert Gibson - 1818 - 478 páginas
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The Elements of Arithmetic

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,...
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First Lessons in Geometry: With Practical Applications in Mensuration, and ...

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,...
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Elements of Surveying, and Navigation: With a Description of the Instruments ...

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,...
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Boston School Atlas

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...
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A New System of Arithmetic, on the Cancelling Plan: Embracing the Rules of ...

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....
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Arithmetic on the Productive System: Accompanied by a Key and Cubical Blocks

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...
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Course of Civil Engineering: Comprising Plane Trigonometry, Surveying, and ...

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...
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Elements of Geometry and Trigonometry: With Applications in Mensuration

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,...
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Mathematical Dictionary and Cyclopedia of Mathematical Science: Comprising ...

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:...
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A High-school Astronomy: In which the Descriptive, Physical, and Practical ...

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?)...
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