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B Circles -- transform degrees in minute

  1. Aug 30, 2016 #1
    A minha pergunta é na divisão 10800/1110
    My question is in the division 10800/1110 ???
    math.png

    m.png
     
    Last edited by a moderator: Aug 30, 2016
  2. jcsd
  3. Aug 30, 2016 #2

    jedishrfu

    Staff: Mentor

    They started with the notion that 180 degrees = ##\pi## radians

    and then the equivalent notion that 10800 minutes = ##\pi## radians

    and then they construct a ratio 180 deg / (18 deg 30 min) = (10800 min) / (1100 min) = 360 / 37 = ##\pi## / x radians

    and then solve for x.
     
  4. Aug 30, 2016 #3
    My question is to simplify,
    how do I simplify? Method of successive division! si.png m.png
     
    Last edited by a moderator: Aug 30, 2016
  5. Aug 30, 2016 #4

    Mark44

    Staff: Mentor

    Simplify what?
    I don't see anywhere in your thread what it is you're trying to do.
    Is the problem to convert 18° 30' into minutes? Or is it to convert this angle measure to radians?

     
  6. Aug 30, 2016 #5
    I'm trying to understand the simplification,
    should be 30 to 10800 and 30 to 1110 ,lol
    Thank you for letting me know
     
    Last edited by a moderator: Aug 30, 2016
  7. Aug 30, 2016 #6

    Mark44

    Staff: Mentor

    You didn't answer my question. What are you trying to convert?

    Is your question how they went from ##\frac{10800}{1110}## to ##\frac{360}{37}##? If so, 1080 = 30 * 360, and 1110 = 30 * 37.
     
  8. Aug 31, 2016 #7
    Perfect is 30
     
  9. Aug 31, 2016 #8
    Thank you!!
     
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