Vectors angles (from the site)

Discussion in 'General Electronics Chat' started by Key, Nov 20, 2013.

  1. Key

    Thread Starter New Member

    Jun 21, 2013
    14
    2
    Hello all, just reading up on some info regarding electronics on this very site.

    Something cought my eye tho,
    http://www.allaboutcircuits.com/vol_2/chpt_2/2.html
    Why is the wave B considered a reference here ?

    See screenshot provided aswell...

    Granted I havent done assignments regarding vectors on AC in a year or so...
    Anyone mind explaining why things are so ?
     
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  2. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,383
    495
    It is arbitrary. You, the designer, decide which one is reference.

    In the case of these written materials. The person or persons who wrote them made that decision.
     
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