 | Charles Davies - Geometry - 1855 - 336 pages
...GEOMETRYDefinitions 28 The circumference of a 'circle is used for the measurement of angles- For this purpose it is divided into 360 equal parts called degrees, each degree into 60 equal parts called ninutes, and each minute into 60 equal parts called secondsThe degrees, minutes, and seconds are marked... | |
 | Charles Davies, William Guy Peck - Mathematics - 1857 - 608 pages
...purposes of trigonometrical computation, each quadrant or right angle is supposed to be divided into 90 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts, called seconds ; so that a right angle contains 32400 seconds. The... | |
 | Charles Haynes Haswell - Measurement - 1858 - 350 pages
...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 is what remains after... | |
 | Bourdon (M., Louis Pierre Marie) - Arithmetic - 1858 - 262 pages
...point within, called the centre. In all the scientific works in this country, the circumference is divided into 360 equal parts, called degrees (°) ; each degree into 60 equal parts, called minutes (,); each minute into 60 equal parts, called seconds ("). This is called the sexagesimal division.... | |
 | John Hymers - Logarithms - 1858 - 292 pages
...of being determined geometrically, and furnishes an invariable standard of angular measure) into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds; then an angle is expressed by the number of degrees,... | |
 | William E. Bell - Bridge building - 1857 - 254 pages
...a tangent — O is the point of contact. 46. The circumference of every circle is measured by being supposed to be divided into 360 equal parts, called degrees; each degree contains GO minutes, and each minute 60 seconds. Degrees, minutes, and seconds, are desig uated respectively... | |
 | Anthony Nesbit - Measurement - 1859 - 494 pages
...A sector is any part of a circle, bounded \'y an arc and two radii. 47. The circumference of every circle is supposed to be divided into 360 equal parts,...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... | |
 | Elias Loomis - Logarithms - 1859 - 372 pages
...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 by the characters... | |
 | William E. Bell - Bridges - 1859 - 224 pages
...a tangent — O is the point of contact. 46. The circumference of every circle is measured by being supposed to be divided into 360 equal parts, called degrees; each degree contains 60 minutes, and each minute 60 seconds. Degrees, minutes, and seconds, are designated respectively... | |
 | Benjamin Greenleaf - Geometry - 1862 - 520 pages
...fixed upon as the unit of angular measure. For this purpose a right angle is generally divided into 90 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds ; then an angle is expressed by the number of degrees,... | |
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The circumference of every circle is supposed to be divided into 360 equal parts called degrees, each degree into 60 equal parts called minutes, each minute into 60 equal parts called seconds. 
