UnitPerpendicularVector Command

UnitPerpendicularVector( <Line>)
Returns the perpendicular vector with length 1 of the given line.
Example:
UnitPerpendicularVector(3x + 4y = 5) yields \begin{pmatrix}0.6\\0.8\end{pmatrix}.
UnitPerpendicularVector( <Segment> )
Returns the perpendicular vector with length 1 of the given segment.
Example:
Let s = Segment((1,1), (4,5)).
UnitPerpendicularVector(s) yields \begin{pmatrix}-0.8\\0.6\end{pmatrix}.
UnitPerpendicularVector( <Vector> )
Returns the perpendicular vector with length 1 of the given vector. The vector must be defined first.
Example:
Let v=\begin{pmatrix}3\\4\end{pmatrix}. UnitPerpendicularVector(v) yields \begin{pmatrix}-0.8\\0.6\end{pmatrix}.
Note: In the CAS View vectors with undefined variables are also valid input.
Example:
UnitPerpendicularVector((a, b)) yields (\frac{-b}{\sqrt{a^{2} + b^{2}}},\frac{a}{\sqrt{a^{2} + b^{2}}}).

CAS Syntax

UnitPerpendicularVector( <Plane> )
Creates a unit vector orthogonal to the plane.
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