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Can someone explain this to me

  1. Sep 7, 2009 #1
    Let speed be s

    s^2 = 4^2 + 9^2

    s^2 = 377

    s = 19.4 mph

    Ө = Tan^(-1) [ 19/4 ] = 78.1°

    3 figure bearing is thus 180 ° - 78.1 ° = 101.9 °

    109.1 ° = N 11.9 ° W

    Why 109.1 ° = N 11.9 ° W.
     
  2. jcsd
  3. Sep 7, 2009 #2

    statdad

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    Homework Helper

    You have a typo at the end of your post.

    It isn't: the result is [tex] 101.9^\circ[/tex], not [tex] 109.1^\circ [/tex]. With N at [tex] 90^\circ [/tex], the result is [tex] 11.9^\circ [/tex] west of that, hence the [tex] N 11.9^\circ W [/tex].
     
  4. Sep 7, 2009 #3
    Oh man! So stupid of me. Thanks!
     
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