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Bøker Bok 14 av 4As the sum of the sines of two unequal arches is to their difference, so is the tangent...
" As the sum of the sines of two unequal arches is to their difference, so is the tangent of half the sum of those arches to the tangent of half their difference : and as the sum... "
Trigonometry, Plane and Spherical: With the Construction and Application of ... - Side 28
av Thomas Simpson - 1748 - 77 sider
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The Accomplished Tutor: Or, Complete System of Liberal Education ..., Volum 2

Thomas Hodson - 1806
...difference; and, As the fum of the cofines is to their ditference, fo is the cotangent of half the fum of the arches to the tangent of half the difference of the feme arches, Theorem V. In any fpherical triangles ABC (fig. la and i3), the proportion is, As the...
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The British encyclopedia, or, Dictionary of arts and sciences

William Nicholson - 1809
...difference : and it the sum of tbcir co-siuc-s is to their difference, so is the co-tangent of half the sum of the arches to the tangent of half the difference of the same arches. In any spherical triangle A li С (fig. 27), it will be, as the cotangent of half the...
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British Encyclopedia: Or, Dictionary of Arts and Sciences ..., Volum 12

William Nicholson - 1821
...difference : and as the sum of their co-sines a to their difference, so is the co-tangent of half the sum of the arches to the tangent of half the difference of the same arches. In any spherical triangle, ABC (fig. 27,) it will be, as the co-tangent of half the sum...
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American Edition of the British Encyclopedia: Or, Dictionary of ..., Volum 12

William Nicholson - 1821
...difference : and as the sum of their co-sines is to their difference, so is the co-tangent of half the sum of the arches to the tangent of half the difference of the same arches. In any spherical triangle, ABC (fig. 27,) it will be, as the co-tangent of half the sum...
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