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anonymous

  • 5 years ago

how do you find the measure of an arc of a cirlce?

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  1. amistre64
    • 5 years ago
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    circumference really

  2. amistre64
    • 5 years ago
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    radian angle * radius

  3. amistre64
    • 5 years ago
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    for the whole thing we get 2pi r for part of it; just replace 2pi with the radian angle

  4. anonymous
    • 5 years ago
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    but the radius is not given thats why im confused

  5. amistre64
    • 5 years ago
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    cant read your mind lol whats the problem and can you send a pic?

  6. anonymous
    • 5 years ago
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    hmm let me try one minute

  7. anonymous
    • 5 years ago
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    there its number two

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  8. amistre64
    • 5 years ago
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    well, the r is gonna be some scaled version of sqrt(2); so id say: r = t sqrt(2) to cover all the bases; what have you been using to determine a radius with?

  9. amistre64
    • 5 years ago
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    lol.... how about this route; the arc length is equal to the angle degree that it is infront of

  10. amistre64
    • 5 years ago
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    since that angle is 90 degrees; the arc length is 90 degrees; or pi/2 radians

  11. anonymous
    • 5 years ago
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    we were using similar angles to find the missing lengths but sences there are no #s given im not sure what to do

  12. anonymous
    • 5 years ago
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    so then arcLM would also be 90?

  13. amistre64
    • 5 years ago
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    its; pi r/2 if it aint gonna give number than thats the best you can do

  14. amistre64
    • 5 years ago
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    yes; 90 degrees

  15. anonymous
    • 5 years ago
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    awsome thank you!

  16. amistre64
    • 5 years ago
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    yw :)

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