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anonymous

  • one year ago

Given: tangent to Circle O. If m = 140°, then A = 70 110 140 http://assets.openstudy.com/updates/attachments/53739855e4b0530e83f03f38-tootsi123-1400084606214-group179.gif

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  1. anonymous
    • one year ago
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    @ganeshie8

  2. anonymous
    • one year ago
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    @geerky42

  3. anonymous
    • one year ago
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    @freckles

  4. geerky42
    • one year ago
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    m = 140° ? Do you mean \(m\angle C=140^\text o\)

  5. anonymous
    • one year ago
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    sorry, its m DB with an arch over that= 140

  6. anonymous
    • one year ago
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  7. anonymous
    • one year ago
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    would it be 140?

  8. geerky42
    • one year ago
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    I think that refers to arc DAB (minor arc), right?

  9. anonymous
    • one year ago
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    right

  10. geerky42
    • one year ago
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    In that case, then angle half the 140

  11. anonymous
    • one year ago
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    so, because DB = 140 DAB = 140?

  12. geerky42
    • one year ago
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    Sorry I am on laptop. What I am trying to say is that given the information, we can see that angle C is half the measure of arc BD |dw:1434465275082:dw|

  13. geerky42
    • one year ago
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    Then given ABCD is inscribed in circle, we know that sum of opposite angles is always 180, right?

  14. geerky42
    • one year ago
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    Do you follow me?

  15. anonymous
    • one year ago
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    right

  16. anonymous
    • one year ago
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    and yes

  17. geerky42
    • one year ago
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    Okay, then we have \(m\angle A+m\angle C = 180^\text o\)

  18. geerky42
    • one year ago
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    we figured out that C is 70.

  19. geerky42
    • one year ago
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    Right?

  20. anonymous
    • one year ago
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    right

  21. anonymous
    • one year ago
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    wait, i got the answer. my teacher came by and just gave me it. thank you for your time!!! i understand it better now

  22. anonymous
    • one year ago
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    i had rather her explain it to me though

  23. geerky42
    • one year ago
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    ok, answer is 110, right?

  24. geerky42
    • one year ago
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    ok great!

  25. anonymous
    • one year ago
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    thats what she said. thanks again!

  26. geerky42
    • one year ago
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    ok no problem

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