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Radian measure

  1. May 23, 2013 #1
    Hi all,

    I have found this formula being used but I am not sure what it means. It is used to find the radius of a circle in a sector. Hope you can help me understand it.

    [tex]sin(π/6) = r/(6-r)[/tex]

    r is the radius of the circle itself and 6 is the radius of the sector or the circle of the sector. I may have to post an illustration if you can understand.

    Thank you.
  2. jcsd
  3. May 23, 2013 #2


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    2017 Award

    Staff: Mentor

    A sketch would be useful, indeed.
    I expect that the sketch shows what the formula means.
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