Biangular coordinates

In mathematics, biangular coordinates are a coordinate system for the plane where ${\displaystyle C_{1}}$ and ${\displaystyle C_{2}}$ are two fixed points, and the position of a point P not on the line ${\displaystyle {\overline {C_{1}C_{2}}}}$ is determined by the angles ${\displaystyle \angle PC_{1}C_{2}}$ and ${\displaystyle \angle PC_{2}C_{1}}$ .

Biangular coordinates

See also

• Two-center bipolar coordinates
• Bipolar coordinates
• Sectrix of Maclaurin

References

• G. B. M. Zerr Biangular Coordinates, American Mathematical Monthly 17 (2), February 1910
• Naylor, “A New Kind of Geometry: the Biangular Coordinate System”
• J. C. L. Fish.Coordinates Of Elementary Surveying, p.38, READ BOOKS, 2007
• George Shoobridge Carr. Formulas and theorems in pure mathematics. p.742. Chelsea Pub. Co., 1970
• Howard W. Baeumler. Biangular coordinates. University of Buffalo, 1950