Given the rectangular coordinate of a point E .
( x-axis , y-axis )
Solve for its equivalent polar coordinate.
DEFAULT ROTATION IS COUNTER CLOCKWISE FROM POSITIVE X-AXIS BECAUSE IT CORRESPONDS TO CARTESIAN COORDINATE
ANSWER: ∠ °

Tutorial on how to convert rectangular coordinates to polar coordinate
| Where are you going to use this knowledge? 2 applications shown below |
| 1. You need this knowledge to analyze power flow phase angle separation 2. Synchrophasor analysis in Power System Engineering |