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OpenSessame Group Title

Line AB is tangent to the circle at B. m<A = 14 and mBC=112 a. Find x. b. Find y.

  • 11 months ago
  • 11 months ago

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  1. OpenSessame Group Title
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    • 11 months ago
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  2. mathstudent55 Group Title
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    |dw:1377144471353:dw|

    • 11 months ago
  3. OpenSessame Group Title
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    \[14=.5(112-X)\] Is that how i would do it?

    • 11 months ago
  4. OpenSessame Group Title
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    Or \[14=.5(x-112)\]

    • 11 months ago
  5. mathstudent55 Group Title
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    The first one.

    • 11 months ago
  6. OpenSessame Group Title
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    Okay...So 84?

    • 11 months ago
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    |dw:1377145019880:dw|

    • 11 months ago
  8. mathstudent55 Group Title
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    Yes

    • 11 months ago
  9. OpenSessame Group Title
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    is 84 X? i feel like im missing something..

    • 11 months ago
  10. mathstudent55 Group Title
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    Yes, x = 84. Now you still need y.

    • 11 months ago
  11. OpenSessame Group Title
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    i wouldnt use the same theorem right?

    • 11 months ago
  12. mathstudent55 Group Title
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    No. This a different case. You need a different theorem for this one.

    • 11 months ago
  13. mathstudent55 Group Title
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    y is the measure of an angle. It is not a length. Perimeter or circumference is a length.

    • 11 months ago
  14. OpenSessame Group Title
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    Okay...So then I'm clueless.

    • 11 months ago
  15. mathstudent55 Group Title
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    An angle formed by a tangent and a chord that intersect on the circle is half the measure of the intercepted arc.

    • 11 months ago
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    Right!

    • 11 months ago
  17. mathstudent55 Group Title
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    |dw:1377145667642:dw|

    • 11 months ago
  18. OpenSessame Group Title
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    But we need to find the arc...right?

    • 11 months ago
  19. mathstudent55 Group Title
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    What is the degree measure of arc CD?

    • 11 months ago
  20. mathstudent55 Group Title
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    What is the degree measure of an entire circle as an arc?

    • 11 months ago
  21. OpenSessame Group Title
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    360

    • 11 months ago
  22. mathstudent55 Group Title
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    Right. Which parts of the circle below do you know the measures of? |dw:1377145802550:dw|

    • 11 months ago
  23. OpenSessame Group Title
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    SO 360-112-84

    • 11 months ago
  24. OpenSessame Group Title
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    164?

    • 11 months ago
  25. mathstudent55 Group Title
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    |dw:1377145885955:dw|

    • 11 months ago
  26. OpenSessame Group Title
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    So 164, right?

    • 11 months ago
  27. mathstudent55 Group Title
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    Correct. Now you need half of that for y.

    • 11 months ago
  28. OpenSessame Group Title
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    82!

    • 11 months ago
  29. mathstudent55 Group Title
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    Bingo!

    • 11 months ago
  30. OpenSessame Group Title
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    Thank you!

    • 11 months ago
  31. mathstudent55 Group Title
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    You deserve a medal.

    • 11 months ago
  32. mathstudent55 Group Title
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    wlcm

    • 11 months ago
  33. OpenSessame Group Title
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    I just need someone to guide me threw the first couple of times then i start getting it lol

    • 11 months ago
  34. mathstudent55 Group Title
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    That's the whole idea of studying and having a teacher or a tutor.

    • 11 months ago
  35. OpenSessame Group Title
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    Do you know anything about probability distribution?And Im studying online, so i miss out on that just a little bit!

    • 11 months ago
  36. mathstudent55 Group Title
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    No, sorry, probability is not my thing.

    • 11 months ago
  37. OpenSessame Group Title
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    Alright, thanks for your help!

    • 11 months ago
  38. mathstudent55 Group Title
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    wlcm

    • 11 months ago
  39. OpenSessame Group Title
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    Thanks to you and @Directrix I understand geometry!

    • 11 months ago
  40. mathstudent55 Group Title
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    That's great, thanks. Keep asking questions. That's how you learn. You can tag me any time. If I'm not on, I'll see it the next time I'm on, and if you didn't get any response yet, I'll try to help.

    • 11 months ago
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