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Math Help - question from Circle

  1. #1
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    question from Circle

    \textup{The chord of contact of tangents from a point P to a circle passes through Q.}
    \textup{If 3 and 4 are the lenghts of tangents to the circle then length of PQ is???}
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  2. #2
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    question from circle

    Quote Originally Posted by banku12 View Post
    \textup{The chord of contact of tangents from a point P to a circle passes through Q.}
    \textup{If 3 and 4 are the lenghts of tangents to the circle then length of PQ is???}
    The tangents to a circle from a point outside the circle are equal so you need to rewrite your problem

    bjh
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  3. #3
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    Also the radius of the circle is required to calculate the length of PQ.
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  4. #4
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    Quote Originally Posted by banku12 View Post
    \textup{The chord of contact of tangents from a point P to a circle passes through Q.}
    \textup{If 3 and 4 are the lenghts of tangents to the circle then length of PQ is???}
    Do you mean something like this:
    Attached Thumbnails Attached Thumbnails question from Circle-tang_abschnitte.png  
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