• #### Perpendicular, Parallel and Skew Lines in Space - Concept

##### Math›Precalculus›Vectors and Parametric Equations
How to determine whether two lines in space are parallel or perpendicular.
• #### The Resultant of Two Forces - Problem 3

##### Math›Precalculus›Vectors and Parametric Equations
How to find the resultant of two forces.
• #### The Resultant of Two Forces - Problem 1

##### Math›Precalculus›Vectors and Parametric Equations
How to find the resultant of two forces.
• #### The Resultant of Two Forces - Problem 2

##### Math›Precalculus›Vectors and Parametric Equations
How to find the resultant of two forces at an acute angle (45 degrees).
• #### Parametric Equations and Motion - Concept

##### Math›Precalculus›Vectors and Parametric Equations
How to graph a parametric curve, and how to eliminate the parameter to obtain a rectangular equation for the curve.
• #### Parametric Equations and Motion - Problem 1

##### Math›Precalculus›Vectors and Parametric Equations
How to determine the path of an object by eliminating the parameter when the position is given by parametric equations.
• #### Parametric Equations and Motion - Problem 2

##### Math›Precalculus›Vectors and Parametric Equations
How to determine the path of an object by eliminating the parameter when the position is given by parametric equations with trigonometric equations.