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Vector Magnitude




In these lessons, we will learn how to find the magnitude of 2-dimensional vectors and 3-dimensional vectors.

Related Topics: More Lessons on Vectors

The length of a vector is called the magnitude or modulus of the vector.



Example:

Express each of the following vectors as a column vector and find its magnitude.


Vectors in 2D

Vectors
Adding vectors geometrically, scalar multiplication, how to find the magnitude and direction angle of a vector.


Vectors : magnitude of a vector in 2D.



 

Vectors in 3D

A vector can also be 3-dimensional.
The following video gives the formula, and some examples of finding the magnitude, or length, of a 3-dimensional vector.



Vectors : Magnitude of a vector 3D.



 

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