# The Algebra of Coplanar Vectors and Trigonometry (Google eBook)

Macmillan and Company, 1892 - Exponential functions - 343 pages

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Page 4 - Symbolical Algebra" it is thus enunciated: "Whatever algebraical forms are equivalent, when the symbols are general in form but specific in value, will be equivalent likewise when the symbols are general in value as well as in form.
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Page 55 - The rectangle contained by the diagonals of a quadrilateral inscribed in a circle is equal to the sum of the rectangles contained by the two pairs of opposite sides.
Page 160 - ... with the last, the second with the last but one, and so on.
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Page xix - The Principles and Application of Imaginary Quantities, Book I. ; to which are added, some observations on Porisms ; being the first of a series of original tracts in various parts of the Mathematics ; by Benj.