Tangents Tool

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This article is about a GeoGebra tool. You can find a list of all tools on this page. If you are searching help how to use tools in general you should read the manual page about tools.

Tangents to a conic section can be produced in several ways (also see command Tangent):
  • Selecting a point A and a conic c produces all tangents through A to c.
  • Selecting a line g and a conic c produces all tangents to c that are parallel to line g.
  • Selecting a point A and a function f produces the tangent line to f in x = x(A).
Note: x(A) represents the x-coordinate of point A. If point A lies on the function graph, the tangent runs through point A.
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