# tangent line   99 videos

• #### Tangent Lines and Optimization

##### AP Calculus ABAP Calculus Videos
Equations of tangent lines optimization problems

##### GeometryCircles

How to define a tangent line; how to determine the angle a radius to a tangent forms.

tangent radius right angle point outside the circle perpendicular
• #### Angle Inclination of a Line

How to find the angle of inclination of a line.

angle inclination horizontal lines tangent slope
• #### Angle Inclination of a Line

How to find the angle of inclination of a line.

angle inclination horizontal lines tangent slope
• #### The Tangent Function

##### TrigonometryTrigonometric Functions

How to define the tangent function for all angles.

tangent right triangle trigonometry the unit circle
• #### The Tangent Function

##### PrecalculusTrigonometric Functions

How to define the tangent function for all angles.

tangent right triangle trigonometry the unit circle
• #### Evaluating the Tangent Function

##### TrigonometryTrigonometric Functions

How to evaluate the tangent of 3*pi/4.

• #### Evaluating the Tangent Function

##### PrecalculusTrigonometric Functions

How to evaluate the tangent of 3*pi/4.

• #### Line Segments

##### GeometryGeometry Building Blocks

How to define and label a line segment.

line endpoint points
• #### Constructing a Perpendicular at a Point on a Line

##### GeometryConstructions

How to construct a perpendicular line at a point on a line.

perpendicular point on the line construct
• #### Parallel and Skew Lines

##### GeometryGeometry Building Blocks

How to mark parallel lines, how to show lines are parallel, and how to compare skew and parallel lines.

parallel lines skew lines coplanar collinear
• #### Parallel and Skew Lines

##### PrecalculusEquations of Lines, Parabolas and Circles

How to mark parallel lines, how to show lines are parallel, and how to compare skew and parallel lines.

parallel lines skew lines coplanar collinear
• #### Tangent Segments to a Circle

##### GeometryCircles

How to find the length of tangent segments drawn to a circle from the same point.

tangent congruent segments inscribed circle
• #### Parallel Planes and Lines

##### GeometryGeometry Building Blocks

How to identify parallel lines, a line parallel to a plane, and two parallel planes.

parallel lines skew plane
• #### Parallel Planes and Lines

##### PrecalculusEquations of Lines, Parabolas and Circles

How to identify parallel lines, a line parallel to a plane, and two parallel planes.

parallel lines skew plane
• #### Standard Form of a Line

##### Algebra 2Graphs of Linear Equations

How to use standard form of a line.

standard form of a line
• #### The Inverse Tangent Function

How to restrict the domain of tangent so it will have an inverse function.

inverse functions one to one inverse tangent arctangent
• #### The Inverse Tangent Function

How to restrict the domain of tangent so it will have an inverse function.

inverse functions one to one inverse tangent arctangent
• #### Converse of Parallel Lines Theorem

##### GeometryReasoning, Diagonals, Angles and Parallel Lines

How to take the converse of the parallel lines theorem.

parallel lines theorem transversal
• #### Converse of Parallel Lines Theorem

##### PrecalculusEquations of Lines, Parabolas and Circles

How to take the converse of the parallel lines theorem.

parallel lines theorem transversal