Unit vector

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A unit vector is a vector that, while it still has a magnitude and direction, only is significant in terms of its direction.

Unit vectors are often notated the same way as normal vectors, but with a circumflex (e.g. a-hat is the versor of a.)

In component form[change | change source]

Three common unit vectors used in component form are i-hat, j-hat and k-hat, referring to the unit vectors for the x-, y- and z-axes respectively. They are commonly just notated as i, j and k.

They can be written as the following: Components i,j and k