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Reflection equation help

  1. May 1, 2004 #1
    I have a hw problem that I'm not sure how to figure out. What equation should I use for this?

    A person whose eyes are 1.8 m above the floor stands in front of a plane mirror. The top of her head is 0.12 m above her eyes. What is the height of the shortest mirror in which she can see her entire image?
  2. jcsd
  3. May 1, 2004 #2
    Haha, nevermind. Figured it myself, thanks anyway.
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