Spherical Trigonometry: For the Use of Colleges and Schools. With Numerous ExamplesMacmillan, 1886 - 158 Seiten |
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A'BC ambiguity angular points approximately arcs drawn arcs which join bisecting centre circular measure cos b cos cos TU cos² cos³ cosines Crown 8vo deduce denote equation equilateral escribed circles example expression faces fixed points formed formulæ formulæ of Art greater Hence inscribed Legendre's Theorem less Let ABC lune meet middle point Napier's analogies Napier's Rules obtain octahedron opposite sides parallelepiped Plane Geometry plane triangle Plane Trigonometry polar triangle pole polygon position preceding Article primitive triangle quadrant R₁ r₂ regular polyhedron respectively result right angles right-angled triangles shew shewn Similarly sin b cos sin b sin sin² sin³ sine small circle described solid angles solution sphere spherical excess spherical triangle Spherical Trigonometry straight lines subtended suppose surface tangent tetrahedron π π