Elements of geometry and trigonometry. Revised and adapted to the course of mathematical instruction in the United States (1856)
Legendre, A. M. (Adrien Marie), 1752-1833, Davies, Charles, 1798-1876 · New York : A.S. Barnes · leaf 88
n the point A lies without the circle,there will be two equal tangents, AB, AD, passing throughthe point A : for, there will be two right-angled triangles,CBA, CBA, having the hypothenuse CA common, and theeide CB—CB; hence, there will be two equal tangents,AB, AD. The angles CAB, CAB, are also…
Geometry · Trigonometry
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