 | Samuel Heynes - Trigonometry - 1716 - 180 pages
...Inftances of this General Rule of the Lord Neper. Of the Solution of Oblique Spherical m • i Triangles. OBlique Spherical Triangles may be reduced to two...letting fall a Perpendicular, which Perpendicular eiPlate V. ther divides the Oblique propcs'd into two f/g.XVIII. Right, or makes two Right, by adding... | |
 | Philip Ronayne - Algebra - 1717 - 478 pages
...Solution of Oblique Spheric Triangles. £ • Oblique- Spberic Triangles maybe reduc'd to two l_d Spberic Triangles, by letting fall a Perpendicular ; which Perpendicular either divides the Oblique propos'd into two Right, or makes two Right by adding a LJ Triangle to it. In Oblique Triangles there... | |
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OBlique Spherical Triangles may be reduced to two Right-angled Spherical Triangles, by letting fall a Perpendicular, which Perpendicular eiPlate V. 