Tangent Line

A tangent line is a line that touches but does not cross a curve at a given point.

Tangent line is a high school-level concept that would be first encountered in a pre-calculus course. It is an Advanced Placement Calculus AB topic and is listed in the California State Standards for Calculus.

Classroom Articles on Pre-Calculus (Up to High School Level)

	Asymptote	Locus
	Complex Conjugate	Logarithm
	Complex Number	Natural Logarithm
	Complex Plane	Normal Vector
	Conic Section	Parabola
	Cross Product	Parametric Equations
	Curve	Plane
	Determinant	Plane Curve
	Domain	Polar Coordinates
	Dot Product	Range
	e	Rational Function
	Ellipse	Reflection
	Exponential Function	Rotation
	Function	Rotation Matrix
	Hyperbola	Scalar
	i	Spherical Coordinates
	Imaginary Number	Translation
	Inverse Function	Vector