direction vector 40 videos

Area With the Cross Product
Precalculus Systems of Linear Equations and Matrices
How to show that the magnitude of the cross product of two vectors gives the area of the parallelogram determined by those two vectors.
cross product magnitude of vectors dot product angle between vectors area parallelogram 
Introduction to the 3D Coordinate System
Precalculus Vectors and Parametric Equations
How to define the components and length of a position vector in three dimensions.
axes coordinates position vector components magnitude length distance origin 
Navigation Problems
Precalculus Vectors and Parametric Equations
How we measure airspeed, wind, groundspeed, and other variables in navigation.
navigation airplane flight airspeed heading groundspeed course wind speed wind direction vector addition magnitude direction 
Quotation Marks
Grammar Punctuation
The rules for using quotation marks.
quotation marks direction quotations 
Displacement
Physics Linear and Projectile Motion
An explanation of displacement.
displacement distance vector 
Gravitational Fields
Physics Gravitation
Understanding and predicting gravitational fields.
gravitational field vector 
Area With Determinants
Precalculus Systems of Linear Equations and Matrices
How to compute the area of a parallelogram using a determinant.
parallelogram vectors determinant area 
The Midpoint and Distance Formulas in 3D
Precalculus Vectors and Parametric Equations
How to derive the formula for the midpoint of a segment in three dimensions.
position vectors the vector from point a to point b the midpoint formula vector addition scalar multiplication 
Perpendicular, Parallel and Skew Lines in Space
Precalculus Vectors and Parametric Equations
How to determine whether two lines in space are parallel or perpendicular.
perpendicular lines dot product direction vectors parallel lines scalar multiple skew lines 
ACT Reading Section
ACT ACT Reading
Short, helpful video on ACT Reading section by top ACT prep instructor, Devorah. Videos are produced by leading online education provider, Brightstorm.
Reading section overview directions format pacing 
ACT Science Section
ACT ACT Science
Short, helpful video on ACT Science section by top ACT prep instructor, Devorah. Videos are produced by leading online education provider, Brightstorm.
Science section overview directions format pacing 
Parametrizing a Line Segment
Precalculus Vectors and Parametric Equations
How to write the parametric equations of a line segment that goes from point A to point B.
vector equation line segment parametric equations 
Redundancy and Wordiness
Grammar Voice and Style
How to eliminate wordiness and redundancy.
redundancy wordiness clear concise direct eliminate passive voice 
ACT English Section
ACT ACT English
Short, helpful video on the ACT English section by top ACT prep instructor, Devorah. Videos are produced by leading online education provider, Brightstorm.
English section overview directions pacing English question types 
ACT Math Section
ACT ACT Math
Short, helpful video on the ACT Math section by top ACT prep instructor, Devorah. Videos are produced by leading online education provider, Brightstorm.
Math section overview directions format pacing question types 
Rotations
Geometry Transformations
How to define a rotation and what information is necessary to perform a rotation.
isometry transformation point of rotation angle of rotation direction counterclockwise clockwise 
Parametric Equations and Motion
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.
position time parametric equations path rectangular equation eliminating the parameter square root function direction of motion 
Motion Along a Line
Precalculus Vectors and Parametric Equations
How to write equations describing motion in a straight line given the velocity and the position when t=0.
velocity constant velocity position vector equation of a line parametric equations parametric equations of a line 
The Angle Between Planes
Precalculus Vectors and Parametric Equations
How to find the angle between planes, and how to determine if two planes are parallel or perpendicular.
normal vector the angle between planes perpendicular planes dot product scalar multiple parallel planes