 | Colin Macfarquhar, George Gleig - Encyclopedias and dictionaries - 1797 - 636 pages
...at the bafe is te the tangent of half theirdifference, fo is "the tangent of half the vertical angle to the tangent of the angle which the perpendicular CD makes with the line CF biiecting the vertical angle. 'The Solution of the CASES of right-angled fpherical Triangles, (fig.... | |
 | Thomas Hodson - Education - 1802 - 556 pages
...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 - Arithmetic - 1806 - 488 pages
...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 - Natural history - 1821 - 356 pages
...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 - Natural history - 1821 - 356 pages
...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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... 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. 