polar notation

Discussion in 'Math' started by Bigcountry, Feb 1, 2009.

  1. Bigcountry

    Thread Starter Active Member

    Jul 4, 2008
    71
    0
  2. AlexK

    Active Member

    May 23, 2007
    34
    0
    Look at it as basic right angle triangle trigonometry:

    hypotenuse =5

    cathetus =4 , the second cathetus=3

    The angle between the hypotenuse and cathetus is 36.87.
    So, from trigonometry we know that:

    cos(36.87)=4/5.

    or

    5*cos(36.87)=4

    Hope that helps
     
  3. Mr Walker

    New Member

    Aug 15, 2007
    6
    0
    good answer
     
  4. wr8y

    Active Member

    Sep 16, 2008
    232
    1
    Well, I don't get 4. I get 3.9999941 :p
     
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