| 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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