Elements of Trigonometry, Plane and Spherical

Elements of Trigonometry, Plane and Spherical Synopsis

Excerpt from Elements of Trigonometry, Plane and Spherical: With the Principles of Perspective, and Projection of the Sphere

Every body knows how much the difeo Veries Of Baron Napier contributed to the perfection of trigonometry. By the loga rithms, the calculations of plane and (phe tical' trigonometry are performed with the greateft cafe and by the rules he'invented, the numerous cafes of fpherical trigono metry' are eafily retained in the memory. Since his time, the principal writers of trigonometry have had chiefly in view how to confirue'lz tables of logarithms in the readielt manner, and to adapt them to tri gonometry.

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