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" If, from an angle of a spherical triangle, there be drawn a perpendicular to the opposite side or base, the tangent of half the sum of the segments of the base is to the tangent of half the sum of the... "
A System of the Mathematics: Containing the Euclidean Geometry, Plane ... - Side 136
av James Hodgson - 1723
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Elements of Plain and Spherical Trigonometry: Together with the Principles ...

John Harris - 1706 - 298 sider
...the fecond Axiom. AXIOM IV. The Bafe it to the Sum of the legs :: at the Difference of the Legs is to the Difference of the Segments of the Bafe made by a, Perpendicular let faff from the Angle oppofite to the Bafe. For, there is alfo another Cafe in plain Oblique Triangles,...
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The Young Mathematician's Guide: Being a Plain and Easy Introduction to the ...

John Ward (of Chester.) - 1747 - 516 sider
...of any $£• Plane Triangle is to the Sum of fs'' \ the Legs, as the Difference of the Legs is to the Difference of the Segments of the Bafe made by...Perpendicular let fall from the Angle oppofite to the Bafe. sDemonfttatton. From the ,/ B, on the Bafe AC, of the Л ABC, let fall the Perpendicular BD ;...
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The Practical Navigator, and Seaman's New Daily Assistant: Being an Epitome ...

John Hamilton Moore - 1791 - 578 sider
...the Bafe or greateft Side is to the Sum pf the other two Sides, fo is the Difference of the Sides to the Difference of the Segments of the Bafe, made by...Perpendicular let fall from the Angle oppofite to the Bafe. ' And if hair the Difference of the Segments be added to half {heir Sum, it will give the greater...
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The New Practical Navigator: Being a Complete Epitome of Navigation to which ...

John Hamilton Moore - 1807 - 586 sider
...fum of the other two fides, .'n is the difference of thofe fides To the difference of the fegments of the bafe made by a perpendicular, let fall from the angle oppofite the bafc. And half the difference of the fegments added to half their fum will give the preater ferment,...
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A Treatise of Plane and Spherical Trigonometry: In Theory and Practice ...

Francis Nichols - 1811 - 162 sider
...be to the tangent of half the sum of the other two sides, as the tangent of half their difference is to the tangent of half the difference of the segments of the base; that is, tan. | (BD + AD) : tan. | (BC + AC) : : tan. | (BC -. AC) : tan. \ (BD - AD). M Because...
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The Edinburgh Philosophical Journal, Volum 4

1821 - 520 sider
...base is to the tangent of half the sum. of the sides, so is the tangent of half the difference of the sides to the tangent of half the difference of the segments of the base; which half difference being added to half the base, gives the greater segment, but being subtracted...
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Mathematical and Astronomical Tables: For the Use of Students of Mathematics ...

William Galbraith - 1827 - 412 sider
...tangent of half the sum of the two sides of the triangle, as the tangent of half the difference of those sides to the tangent of half the difference of the segments of the base, or tan. £ (BD + CD) : tan. £ (AB + BC) : : tan. \ (AB ел АС) : tan. A (BDcrCD). When the...
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Mathematical and Astronomical Tables: For the Use of Students in Mathematics ...

William Galbraith - 1834 - 454 sider
...tangent of half the sum of the two sides of the triangle, as the tangent of half the difference of those sides to the tangent of half the difference of the segments of the base, or tan \ (BD + CD) : tan £ (AB + BC) : : tan \ (AB<» AC) : tan £ (BD<» CD). When the three...
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Elements of Plane and Spherical Trigonometry: With Their Applications to ...

Elias Loomis - 1855 - 192 sider
...to the tangent of half the sum of the sides, as the tangent of half the difference of the sides is to the tangent of half the difference of the segments of the base. Let ABC be any spherical triangle, and let CD be drawn from C perpendicular to the base AB ;...
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Tables of Logarithms of Numbers and of Sines and Tangents for Every Ten ...

Elias Loomis - 1859 - 372 sider
...to the tangent of half the sum of the sides, as the tangent of half the difference of the sides is to the tangent of half the difference of the segments of the base. Let ABC be any spherical triangle, and let CD be drawn from C perpendicular to the base AB ;...
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