 | Thomas Simpson - Trigonometry - 1799 - 92 pages
...arch. Thus CF is the co-fine of the arch AB, and is equal to BI, the fine of its complement HB. 9. The tangent of an arch is a right line touching the circle in one extremity of that arch, produced from thence till it meets a right-line pafling through the center and the other extremity.... | |
 | Edward Augustus Kendall - Encyclopedias and dictionaries - 1811 - 476 pages
...the co-sine of the arc AB, and is equal to Bf, the sine of its complement HB. The tangent of an arc, is a right line touching the circle in one extremity of that arc, continued from thence to meet a line drawn from the centra through the other extremity ; which... | |
 | Edward Augustus Kendall - 1811 - 462 pages
...the co.sine of the arc AB, and is equal to BI, the sine of its complement HB. The tangent of an arc, is a right line touching the circle in one extremity of that arc, continued from thence to meet a line drawn from the centre through the other extremity ; which... | |
 | William Jillard Hort - 1822 - 308 pages
...between its extremity and the sine. Thus, AG is the versed sine of the arch AB, .or of the angle ACB. 7. The tangent of an arch, is a right line touching the circle, at one extremity of the arch, and meeting a diameter of that circle passing through the other extremity... | |
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BI, the sine of its complement HB. The tangent of an arc, is a right line touching the circle in one extremity of that arc, continued from thence to meet a line drawn from the... 