Angle notation

Angle notation or phasor notation is a notation used in electronics.  ${\displaystyle 1\angle \theta }$ can represent either the vector  ${\displaystyle (\cos \theta ,\sin \theta )\,}$  or the complex number  ${\displaystyle \cos \theta +j\sin \theta =e^{j\theta }}$, with ${\displaystyle j^{2}=-1}$, both of which have magnitudes of 1.  A vector whose polar coordinates are magnitude  ${\displaystyle A}$  and angle  ${\displaystyle \theta }$  is written  ${\displaystyle A\angle \theta .}$    To convert between polar and rectangular forms, see Converting between polar and Cartesian coordinates.

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