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Definitions of tangent
  1. noun
    ratio of the opposite to the adjacent side of a right-angled triangle

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    tan
  2. noun
    a straight line or plane that touches a curve or curved surface at a point but does not intersect it at that point
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Definition that contains tangent
  • envelope a curve that is tangent to each of a family of curves
  • minimum the point on a curve where the tangent changes from negative on the left to positive on the right
  • maximum the point on a curve where the tangent changes from positive on the left to negative on the right
  • curvature the rate of change (at a point) of the angle between a curve and a tangent to the curve
  • osculation (mathematics) a contact of two curves (or two surfaces) at which they have a common tangent
  • tangential of or relating to or acting along or in the direction of a tangent
  • tangent plane the plane that contains all the lines tangent to a specific point on a surface
  • inverse cotangent the inverse function of the cotangent; the angle that has a cotangent equal to a given number
  • tangency the state of being tangent; having contact at a single point or along a line without crossing
  • arccotangent the inverse function of the cotangent; the angle that has a cotangent equal to a given number
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