Negative Magnitude Phasor Presentation: Is Erasing the - Sign Correct?

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When dealing with a phasor that has a negative magnitude, the correct presentation involves erasing the negative sign and adjusting the phase angle by adding or subtracting 180 degrees. The resultant phase angle should be kept within the range of +/-180 degrees or converted to a 0 to 360-degree format as needed. Modulo arithmetic may be necessary in certain cases to maintain this range. This approach ensures clarity and accuracy in phasor representation. Proper handling of negative magnitudes is essential for effective analysis in electrical engineering contexts.
fbenit1
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If you have a phasor that has a negative magnitude (ie -3<38degrees) what is the best presentation. I believed it was just erasing the - sign and adding or subtracting 180degrees. Correct me if wrong
 
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That's right - just remember the resultant phase angle would lie between +/-180 degrees (or 0 and 360, if that's the way you want to do it) - so you may need to do some modulo arithmetic in some cases.
 
you are right
 

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