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Momo

  • 5 years ago

how do i know what theta is to solve the length of an arc?

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  1. anonymous
    • 5 years ago
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    Does it not give you the degree of the central angle?

  2. momo
    • 5 years ago
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    well, it's a circle...i'm not sure. i will set the problem as my profile picture lol

  3. anonymous
    • 5 years ago
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    You can attach File... located at the bottom of where you post instead...

  4. momo
    • 5 years ago
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    oh okay :D

  5. momo
    • 5 years ago
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  6. anonymous
    • 5 years ago
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    What are you trying to find?

  7. momo
    • 5 years ago
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    arcEDC

  8. anonymous
    • 5 years ago
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    Is this a unit circle?

  9. anonymous
    • 5 years ago
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    Look at the angle made up from Arc AB. There is a vertical angle equal to that angle made from Arc ED.... Do you see that those two are equal?

  10. momo
    • 5 years ago
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    they are both 50?

  11. anonymous
    • 5 years ago
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    yep

  12. anonymous
    • 5 years ago
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    Yes so the arc EDC that you are trying to find is a total of 90 degrees. The arc length is found by multiplying the degrees (90) times the radius. I don't know what your radius is...

  13. momo
    • 5 years ago
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    it doesn't give me a radius...hmmm

  14. momo
    • 5 years ago
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    i could give you the multiple choice answers?

  15. anonymous
    • 5 years ago
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    Yes

  16. momo
    • 5 years ago
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    45pi 45 5pi/2 5pi

  17. momo
    • 5 years ago
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    sorry, i didn't find the pi symbol. and the 3rd one is a fraction

  18. amistre64
    • 5 years ago
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    this one?

  19. momo
    • 5 years ago
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    yep :)

  20. momo
    • 5 years ago
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    i have an attachment in it

  21. amistre64
    • 5 years ago
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  22. momo
    • 5 years ago
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    If AD=10, find the length of arcEDC

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  23. momo
    • 5 years ago
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    oh awesome! thanks :D

  24. anonymous
    • 5 years ago
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    5 * pi/2

  25. momo
    • 5 years ago
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    oh, wait sorry, 90 isn't an option

  26. amistre64
    • 5 years ago
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    again; without any knowledge of the radius, there is no way to solve an arclength for this; so its most likely an angle

  27. momo
    • 5 years ago
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    jonknet, yours is an option

  28. anonymous
    • 5 years ago
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    convert degrees to radians

  29. momo
    • 5 years ago
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    yeah amistre64 it is difficult

  30. amistre64
    • 5 years ago
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    yes; radian measures....its good to know what the real question is :)

  31. anonymous
    • 5 years ago
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    r=5. theta = 90pi/180 = pi/2. multiply out.

  32. amistre64
    • 5 years ago
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    r = 5? wheres that at?

  33. momo
    • 5 years ago
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    oh thank you so much!!!

  34. anonymous
    • 5 years ago
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    AD = 10

  35. amistre64
    • 5 years ago
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    i see no 10 lol

  36. anonymous
    • 5 years ago
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    It's not in the picture. Check Momo's response a few up.

  37. amistre64
    • 5 years ago
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    ah.....

  38. anonymous
    • 5 years ago
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    I almost missed it too lol

  39. momo
    • 5 years ago
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    you guys are awesome! thank you so very much!!

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