| John Playfair - 1795 - 400 sider
...through the other extremity C in E, is called the Tangent of the arch AC, or of the angle ABC. CoR. **The tangent of half a right angle is equal to the radius.** VII. The ftraight line BE between the centre and the extremity of the tangent AE, is called the Secant... | |
| John Playfair - 1819 - 333 sider
...passes through C the other extremity, is called the Tangent of the arch AC, or of the angle ABC. COR. **The tangent of half a right angle is equal to the radius.** VII. The straight line BE, between the centre and the extremity of the tangent AE is called the Secant... | |
| William Jillard Hort - 1822
...B the other extremity of the arch AB, is the tangent of that arch, or of the angle ACB. Corollary. **The tangent of half a right angle is equal to the radius.** The secant of an arch is the diameter of the circle of which that arch is a part, which is produced... | |
| Edward Riddle - 1824
...of their complements. For as = -, therefore log rad — log tan = tan rad log cot — log rad. Now **the tangent of half a right angle is equal to the radius;** therefore the distance on the logarithmic scale from the tangent of any less angle than half a right... | |
| Euclid, Robert Simson - 1835 - 513 sider
...through C, the other extremity, in E, is called the Tangent of the arch AC, or of the angle ABC. COR. **The tangent of half a right angle is equal to the radius.** VIII. The straight line BE between the centre and the extremity of the tangent AE, is called the Secant... | |
| Euclid, Robert Simson - 1835 - 513 sider
...through C, the other extremity, in E, is called the Tangent of the arch AC, or of the angle ABC. COR. **The tangent of half a right angle is equal to the radius.** VIII. The straight line BE between the centre and the extremity of the tangent AE, is called the Secant... | |
| Andrew Bell - 1837 - 240 sider
...DEFINITIONS. 1. The sine of a quadrant, or of aright angle, is equal to the radius. For CO = sin AC. 2. **The tangent of half a right angle is equal to the radius.** For, if angle AOF were half a right angle, so would F (I. 32), and therefore AF would be equal to AO.... | |
| John Playfair - 1842 - 317 sider
...passes through C the other extremity, is called the Tangent of the arc AC, or of the angle ABC COR. **The tangent of half a right angle is equal to the radius.** 7. The straight line BE, between the centre and the extremity of the tangent AE is called the Secant... | |
| John Playfair - 1846 - 317 sider
...passes through C the other extremity, is called the Tangent of the arc AC, or of the angle ABC COR. **The tangent of half a right angle is equal to the radius.** 7. The straight line BE, between the centre and the extremity of the tangent AE is called the Secant... | |
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