In mathematics, biangular coordinates are a coordinate system for the plane are two fixed points, and the position of a point P not on the line is determined by the angles

The sine rule can be used to convert from biangular coordinates to two-center bipolar coordinates.

Applications

Biangular coordinates can be used in geometric modelling and CAD.

See also

• Two-center bipolar coordinates

• Bipolar coordinates

• Sectrix of Maclaurin

References

External links

• G. B. M. Zerr Biangular Coordinates, American Mathematical Monthly 17 (2), February 1910

• J. C. L. Fish,

• George Shoobridge Carr, (see page 742)