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BNC: 21952 COCA: 24421
tangent
noun [C] maths /ˈtændʒ(ə)nt/
singulartangent
pluraltangents
  1. 1
    a straight line that touches the edge of a circle but does not pass through it 切线
     Synonyms and related words
    Lines and flat surfaces: arc, axis, chord...
  2. 2
    in a right-angled triangle, the measurement of an acute angle that is equal to the length of the side opposite the angle divided by the length of the side between the angle and the right angle 切正
     Synonyms and related words
BNC: 21952 COCA: 24421
BNC: 21952 COCA: 24421

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