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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. "
The Theory and Practice of Surveying: Containing All the Instructions ... - Σελίδα 45
των Robert Gibson - 1821 - 544 σελίδες
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The American House Carpenters' and Joiners' Assistant

Lucius D. Gould - 1857
...middle; thus, the angle contained by the line A c and E o, is called the angle A CE, or EC A. Fig. 9. The circumference of every circle is supposed to be divided into 360 equal parts, I Plate 8. PLATE IX. Is a plastered groin arch designed for an oblong ceiling, and its angles represented...

Elements of Geometry and Trigonometry: From the Works of A.M. Legendre

Adrien Marie Legendre - 1857 - 448 σελίδες
...the six parts is given. 3. For the purpose of trigonometrical calculation, the circumference of the circle is 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...

A New System of Arithmetic, on an Improved Plan, Embracing the Rules of ...

Charles Guilford Burnham - 1857
...12 signs,or360° ............................ 1 circle. " Every circle, without regard to its size, is supposed to be divided into 360 equal parts, called degrees, and these again to be subdivided into minutes and seconds ; so that the absolute quantity expressed by...

Mensuration and Practical Geometry: Containing Tables of Weights and ...

Charles Haynes Haswell - 1858 - 322 σελίδες
...that touches a circle without cutting it. A Cotangent is the tangent of the complement of the arc. The Circumference of every circle is supposed to be divided into 360 equal parts, called Degrees ; each degree into 60 Minutes, and each minute into 60 Seconds, and so on. The Complement of an angle...

The Scientific and Literary Treasury: A New and Popular Encyclopedia of the ...

Samuel Maunder - 1858 - 832 σελίδες
...compasses, nxing one foot in the centre and turning the other round to trace out the circumference. The circumference of every circle is supposed to be divided into 360 equal part a, called degrees and marked " ; and each degree into GU minutes, marked'. The word Circle is...

A New System of Arithmetic, on an Improved Plan ...

Charles Guilford Burnham - 1859
...parts called semicircles. 14. The circumference of every circle is supposed to be divided into 860 equal parts, called degrees ; and each degree into...equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, eta Hence a semicircle contains 180 degrees,...

ELEMENTS OF PLANE AND SPHERICAL TRIGONOMETRY

ELIAS LOOMIS, LL.D. - 1859
...Trigonometry treats of plane triangles; Spherical Trigonometry treats of spherical triangles. (19.) The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 minutes, and each minute into 60 seconds. Degrees, minutes, and seconds are designated...

The Progressive Practical Arithmetic: Containing the Theory of Numbers, in ...

Horatio Nelson Robinson - 1859 - 336 σελίδες
...suits containing 9 yd. 2 qr. each ; how many suits did he make ? Ans. 17. LONGITUDE AND TIME. c 324. Every circle is supposed to be divided into 360 equal parts, called degrees* Since the sun appears to pass from east to west round the earth, or through 360°, once in every 24...

A Treatise on Practical Mensuration

Anthony Nesbit - 1859 - 450 σελίδες
...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 GO equal parts, called seconds. 48. The arc of a quadrant contains 90 degrees, which is the measure...

The Modern Mechanic: A Scientific and Calculator, Comprising Rules and ...

William Grier - 1861 - 305 σελίδες
...two on the two 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...equal parts, called degrees ; and each degree into 60 minutes, each minute into 60 seconds, and so on. Hence a semicircle contains 180 degrees, and a quadrant...




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