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In mathematics, biangular coordinates are a coordinate system for the plane where C_1 and C_2 are two fixed points, and the position of a point ''P'' not on the
line Line most often refers to: * Line (geometry), object with zero thickness and curvature that stretches to infinity * Telephone line, a single-user circuit on a telephone communication system Line, lines, The Line, or LINE may also refer to: Art ...
\overline is determined by the
angle In Euclidean geometry, an angle is the figure formed by two rays, called the '' sides'' of the angle, sharing a common endpoint, called the '' vertex'' of the angle. Angles formed by two rays lie in the plane that contains the rays. Angles ...
s \angle PC_1C_2 and \angle PC_2C_1.


See also

*
Two-center bipolar coordinates In mathematics, two-center bipolar coordinates is a coordinate system based on two coordinates which give distances from two fixed centers c_1 and c_2. This system is very useful in some scientific applications (e.g. calculating the electric fi ...
* Bipolar coordinates *
Sectrix of Maclaurin In geometry, a sectrix of Maclaurin is defined as the curve swept out by the point of intersection of two lines which are each revolving at constant rates about different points called poles. Equivalently, a sectrix of Maclaurin can be defined as ...


References


External links


G. B. M. Zerr Biangular Coordinates
''American Mathematical Monthly'' 17 (2), February 1910
J. C. L. Fish, ''Coordinates Of Elementary Surveying''

George Shoobridge Carr, ''A synopsis of elementary results in pure mathematics''
(see page 742) Coordinate systems {{geometry-stub