# Unit Vector

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Definition
 Unit Vector A vector $'''a'''$ is said to be a unit vector if its magnitude (length) is $1$.

## Supplementary definitions

Unit Vector
In mathematics, a unit vector in a normed vector space is a vector (often a spatial vector) whose length is 1 (the unit length). A unit vector is often denoted by a lowercase letter with a superscribed caret or “hat”, like this:${\hat{\imath}}$ (pronounced "i-hat").