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Bisection (trigonometry)

  1. Jul 3, 2007 #1
    what algebrical rule guarantees me thet is right to divide both angles for 2:
  2. jcsd
  3. Jul 3, 2007 #2


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    Science Advisor

    Substitution, nothing more.


    Let u=2x, then


    Now you can replace u with whatever pronumeral you desire.
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