 | Charles Guilford Burnham - 1857 - 328 σελίδες
...Sassing through the centre ; and it ivicles the circle into two equal parts called semicircles. 14. The circumference of every circle is supposed to be...equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, etc. Hence a semicircle contains 180 degrees,... | |
 | Lucius D. Gould - 1857 - 464 σελίδες
...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... | |
 | Adrien Marie Legendre, Charles Davies - 1857 - 442 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... | |
 | Charles Guilford Burnham - 1857 - 342 σελίδες
...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... | |
 | Charles Haynes Haswell - 1858 - 350 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... | |
 | Samuel Maunder - 1858 - 868 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... | |
 | Charles Guilford Burnham - 1859 - 338 σελίδες
...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,... | |
 | Elias Loomis - 1859 - 372 σελίδες
...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... | |
 | Horatio Nelson Robinson - 1859 - 362 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... | |
 | Anthony Nesbit - 1859 - 494 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... | |
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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. 
