| Thomas Hodson - 1802
...the bafe, is to the tangent of half their difference, fo is the tangent of half the vertical angle, **to the tangent of the angle which the perpendicular CD makes with the line CF,** bifcding the vertical The Solution of the Cafes of righl-angled fpfierical Triangles, (Fig. II.) \OTI.... | |
| Thomas Hodson - 1806 - 458 sider
...the bafe, is to the tangent of half their difference, fo is the tangent of half the vertii cal angle, **to the tangent of the angle which the perpendicular CD makes with the line CF,** bifefling the vertical angle. 4 77* The Solution of the Cafes of right-angled fpherical Triangles,... | |
| William Nicholson - 1821
...at the case is to the tangent of half their difference, so is the tangent of half the vertical angle **to the tangent of the angle which the perpendicular CD makes with the line CF,** bisecting the vertical angle. The following propositions and remarks concerning spherical triangles... | |
| William Nicholson - 1821
...at the base is to the tangent of half their difference, so is the tangent of half the vertical angle **to the tangent of the angle which the perpendicular CD makes with the line CF,** bisecting the vertical angle. The following propositions and remarks concerning spherical triangles... | |
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