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Mathematics 16 Online
OpenStudy (anonymous):

What is the secant line? What is the tangent line? Definitions.

OpenStudy (anonymous):

I'm not sure how each one is used

OpenStudy (p0sitr0n):

tangent = derivative of a curve at that point (touches it ) secant means it intersects the curve somewhere (think of a circle)

Directrix (directrix):

@lol09lune Are you taking a course in Geometry or Calculus?

OpenStudy (anonymous):

Calculus

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