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anonymous

  • one year ago

What is the length of line AB?

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  1. anonymous
    • one year ago
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  2. mathstudent55
    • one year ago
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    That's a trick question. Every line has infinite length. Perhaps you mean the length of segment AB?

  3. anonymous
    • one year ago
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    Yes that is what i ment

  4. anonymous
    • one year ago
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    Is there enough information given to solve it?

  5. mathstudent55
    • one year ago
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    We can get these angles using the inverse tangent function. |dw:1436220001584:dw|

  6. mathstudent55
    • one year ago
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    I don't think there is enough info on triangle ABP to answer unless we know that segment AB is parallel to segment L1L2. |dw:1436220177111:dw|

  7. mathstudent55
    • one year ago
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    If segment AB and segment L1L2 are parallel, then you can find the length of segment AB.

  8. anonymous
    • one year ago
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    Ah yes forgot to mention that they are parallel

  9. mathstudent55
    • one year ago
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    Then we can use more angles. See below. |dw:1436220516982:dw|

  10. mathstudent55
    • one year ago
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    Use the law off sines. |dw:1436220599120:dw|

  11. anonymous
    • one year ago
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    573?

  12. mathstudent55
    • one year ago
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    No. The angles of the triangle are not that different in size, so one side can't that much smaller than the other side. \(x = \dfrac{4010~ft \cdot \sin 69^o}{\sin 61.9^o} \) Try again.

  13. mathstudent55
    • one year ago
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    BTW, your calculation of the proportion was done correctly. You need to set your calculator to degrees. It is set to radians.

  14. anonymous
    • one year ago
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    That is what i thought i did wrong let me try again

  15. mathstudent55
    • one year ago
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    ok

  16. anonymous
    • one year ago
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    about 4,243?

  17. mathstudent55
    • one year ago
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    yes

  18. anonymous
    • one year ago
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    Thank you for your help!

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