On the Analytical Representation of Direction: An Attempt Applied Chiefly to Solving Plane and Spherical Polygons, 1797Royal Danish Academy of Sciences and Letters, 1999 - 143 頁 |
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Academy according added algebraic angle applied Argand assumed Attempt axis becomes calculations called Caspar Wessel Cauchy changed circle complex numbers considered contain cos n cos(n definition denoted determined deviates directed line segments draw equal equation expressions figure formula Gauss geometric give given hence horizontal idea interpretation introduced Johan known København later length less Letter mathematicians mathematics means measured meno mentioned meridian multiplied namely negative obtained Oldenburg operations parallel plane polygon positive possible present problem proof published quantities radius references relation representation representing reprinted result roots rule Sciences side sin II sin n sine solve sphere spherical straight line surveying surveyor tangent term theorem third Thomas Bugge tion translated treatise triangle trigonometrical turned unit unknown vertical