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anonymous

  • one year ago

In the diagram below, line segment XY and YZ are tangent to center O. What is the measure of angle Y? http://media.apexlearning.com/Images/200701/18/f0ee3cbf-ce2f-42d8-a2ff-93f3dbcb4d91.gif

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  1. anonymous
    • one year ago
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    thank you so much welshfella :) haha

  2. welshfella
    • one year ago
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    there might be another theorem involving arcs here which i dont know

  3. welshfella
    • one year ago
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    |dw:1434908013018:dw|

  4. welshfella
    • one year ago
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    the angle at the center = measure of arc length 132 so x = 360 - (90 +90 + 132)

  5. anonymous
    • one year ago
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    so 48

  6. welshfella
    • one year ago
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    the angles between the tangents and the radii are both 90 degrees

  7. welshfella
    • one year ago
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    yes

  8. anonymous
    • one year ago
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    thank you!

  9. welshfella
    • one year ago
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    yw oh you can medal me if you like

  10. welshfella
    • one year ago
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    - for being a good pupil lol!

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