Fuzzy Qualitative Trigonometry

@article{Liu2005FuzzyQT,
  title={Fuzzy Qualitative Trigonometry},
  author={Honghai Liu and G. Coghill and Dave P. Barnes},
  journal={2005 IEEE International Conference on Systems, Man and Cybernetics},
  year={2005},
  volume={2},
  pages={1291-1296}
}
This paper proposes fuzzy qualitative representation of trigonometry (FQT) in order to bridge the gap between qualitative and quantitative representation of physical systems using trigonometry. Fuzzy qualitative coordinates are defined by replacing a unit circle with a fuzzy qualitative circle; the Cartesian translation and orientation are replaced by their fuzzy membership functions. Trigonometric functions, rules and the extensions to triangles in Euclidean space are converted into their… Expand

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