| John Hymers - 1841 - 244 páginas
...90th part of a right angle, which is always used in practical applications, there is another, viz. the angle at the centre of a circle which is subtended by an arc equal to the radius of the circle, which is more convenient in analytical investigations. This angle will... | |
| Thomas Lund - 1854 - 520 páginas
...distance between the centres, if the smaller radius be 1 inch. Ans. 2| in. (23) Find the measure of the angle at the centre of a circle which is subtended by an arc equal to the diameter. Ans. 114° 35^', nearly. (24) Supposing the diameter of the earth, as seen at the... | |
| John Hymers - 1858 - 292 páginas
...90th part of a right angle, which is always used in practical applications, there is another, viz. the angle at the centre of a circle which is subtended by an arc equal to the radius of the circle, which is more convenient in analytical investigations. This angle will... | |
| Thomas Percy Hudson - 1862 - 218 páginas
...angle which is taken as the unit in estimating angles by the circular measure. The angle employed as a unit is that angle at the centre of a circle which is subtended by an arc equal to the radius, and which, as we have just explained, must be an invariable angle for all circles. The... | |
| Woolwich roy. military acad - 1864 - 588 páginas
...PUEE MATHEMATICS. Section I. TO 12 AM EEV. CANON HEAVISIDE, MA PLANE TRIGONOMETRY. 1. Show that the angle at the centre of a circle which is subtended by an arc equal to the radius is invariable. If this angle be taken as the unit of measurement, any other angle will... | |
| Joseph Allen Galbraith - 1866 - 132 páginas
...may be referred. 2. The Angular Unit The unit to which all angles are referred may be thus denned : DEFINITION : The angular unit is that angle at the centre of a circle which is subtended by an are equal in length to the radius. "With C as centre, and any line CA as radius, describe a circle.... | |
| H. C. Godwin - 1890 - 394 páginas
...greater than this in the same ratio as the arc AFB in Fig. 19 exceeds the 100-foot chord AB. Now the angle at the centre of a circle which is subtended by an arc equal to the radins equals — °= 57°. 29578, It so that the true length of a curve is given by the equation... | |
| Alfred Payson Gage - 1895 - 672 páginas
...The unit angle in terms of which angular velocity is measured is called a radian, and is the angle which is subtended by an arc equal in length to the radius. It is customary then to express angular velocity of a body in radians per second, and this is numerically... | |
| Herbert James Larcombe - 1928 - 272 páginas
...previous paragraph (Part I), a radian is the size of the angle subtended at the centre of a circle by an arc equal in length to the radius. Thus if the length of the arc AB, when stretched out, is equal to OB, then LAOB=l radian. arc AB 1 radian Also... | |
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