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Math Help - Finding length of subtended arc.

  1. #1
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    Finding length of subtended arc.

    I'm having some trouble understanding the following problem:

    An angle measuring 5π/6 radians has its vertex at the center of a circle whose radius is 7 meters. Find the length of the subtended arc.

    I think I know what the picture looks like, but how do I find that length?
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  2. #2
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    Quote Originally Posted by Murphie View Post
    I'm having some trouble understanding the following problem:

    An angle measuring 5π/6 radians has its vertex at the center of a circle whose radius is 7 meters. Find the length of the subtended arc.

    I think I know what the picture looks like, but how do I find that length?
    Have you been taught the formula l = r \theta ?

    Alternatively, 5π/6 radians is 5/12 of 2π. So the arclength is 5/12 of the circumference.
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