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" For this purpose it 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 degrees, minutes, and seconds are marked thus ° ' " ; and 9° 18' 16", are read,... "
Elements of Geometry and Trigonometry: With Applications in Mensuration - Page 12
by Charles Davies - 1886 - 324 pages
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Elements of Surveying: With a Description of the Instruments and the ...

Charles Davies - Surveying - 1839 - 376 pages
...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. PLANE TRIGONOMETRY. V As the circumference of a circle may be regarded as a proper measure of angles,...
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Elements of Surveying: With a Description of the Instruments and the ...

Charles Davies - Surveying - 1839 - 376 pages
...utmost accuracy. 41. For the purposes of trigonometrical calculations, the circumference of the circle is divided into 360 equal parts, called degrees; each...and each minute into 60 equal parts, called seconds. PLANE TRIGONOMETRY \ As the circumference of a circle may be regarded as a proper measure of angles,...
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First Lessons in Geometry: With Practical Applications in Mensuration, and ...

Charles Davies - Geometrical drawing - 1840 - 264 pages
...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...and seconds, are marked thus, °, ', " ; and 9° 18' 10", are read, 9 degrees, 18 minutes, and 10 seconds. 8. Suppose the circumference of a circle to be...
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The Elements of Arithmetic

Augustus De Morgan - Algebra - 1840 - 182 pages
...radius, very nearly. Multiply the square of the radius by 3-1415927. * The right angle is divided into 90 equal parts called degrees, each degree into 60 equal...and each minute into 60 equal parts called seconds. Thus, 2° 15' 40" means 2 degrees, 15 minutes, and 40 seconds. To find the area of a sector, very nearly,...
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The Elements of Arithmetic

Augustus De Morgan - Algebra - 1840 - 186 pages
...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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Elements of Surveying, and Navigation: With a Description of the Instruments ...

Charles Davies - Navigation - 1835 - 388 pages
...utmost accuracy. 41. For the purposes of trigonometrical calculations, the circumference of the circle is divided into 360 equal parts, called degrees; each...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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Elements of Surveying, and Navigation: With a Description of the Instruments ...

Charles Davies - Navigation - 1841 - 414 pages
...purposes of trigonometrical calculations, the circumference of the circle is divided into 360 eqnal parts, called degrees ; each degree into 60 equal...and each minute into 60 equal parts, called seconds. As the circumference of a circle may be regarded as a proper meesure of angles, having their vertices...
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Boston School Atlas

Benjamin Franklin Edmands - Geography - 1841 - 88 pages
...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 - Arithmetic - 1841 - 324 pages
...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 - Arithmetic - 1841 - 324 pages
...through the centre of the earth. 15 CORRESPOH D, [L. eorrespondeo.} To answer to ; communicate with. parts, called minutes, and each minute into 60 equal parts, called seconds. 76. The circumference1 of the earth is a great circle of 360 de prees. On this circle every minute...
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