Tangens ist
eine trigonometrische
Funktionenund
spielt in der Mathematik und ihren Anwendungsgebieten eine herausragende
Rolle. Der Tangens des Winkels x wird mit tan x bezeichnet.
The tangent line (or simply the
tangent) to a curve at a given point is the straight linethat "just touches" the curve at that
point (in the sense explained more precisely below). As it passes
through the point where the tangent line and the curve meet, or the
point of tangency, the tangent line is "going in the same
direction" as the curve, and in this sense it is the best
straight-line approximation to the curve at that point.
