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anonymous

  • one year ago

Radius OA of circle O has a slope of 2.5. What is the slope of the line tangent to circle O at point A? 0.8 2.5 -0.4 -5

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  1. amoodarya
    • one year ago
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    |dw:14351729953:dw

  2. amoodarya
    • one year ago
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    |dw:1435173081679:dw| \[\frac{HA}{oH}=2.5\] is this ? what you mean ?

  3. anonymous
    • one year ago
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    um i guess...it's cause the problem doesn't include a picture

  4. amoodarya
    • one year ago
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    |dw:1435173229389:dw|

  5. amoodarya
    • one year ago
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    you can draw an image (it help you to better understanding) slope (oA) , slope(tangent line) =-1 because they are perpendicular

  6. amoodarya
    • one year ago
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    now you must guess the answer ! can't you ?

  7. anonymous
    • one year ago
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    i dont know! i honestly dont know /:

  8. amoodarya
    • one year ago
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    if two line are perpendicular ...with slope \[m_1 ,m_2\] so relation between them is : \[m_1.m_2=-1\\m_1=2.5\\so\\m_2=?\]

  9. amoodarya
    • one year ago
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    m2 =?

  10. anonymous
    • one year ago
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    -3.5? idk!

  11. amoodarya
    • one year ago
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    \[2.5 *m_2=-1\\m_2=\frac{-1}{2.5}=\frac{-1}{\frac{5}{2}}\\=\frac{-2}{5}\]

  12. anonymous
    • one year ago
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    -0.4

  13. amoodarya
    • one year ago
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    bravo

  14. anonymous
    • one year ago
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    yaaay! thank you!

  15. amoodarya
    • one year ago
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    understand ?

  16. anonymous
    • one year ago
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    yes (:

  17. amoodarya
    • one year ago
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    it is not better to change your Id to igetmath ?

  18. anonymous
    • one year ago
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    you dont like my id name? lol

  19. amoodarya
    • one year ago
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    i live mathematics

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