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  1. Jan 15, 2007 #1
    tan(3pi\11)+4sin(2pi\11)=sqrt(11)
     
  2. jcsd
  3. Jan 15, 2007 #2

    matt grime

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    Does using standard trig manipulations really get you no where?
     
  4. Jan 15, 2007 #3

    Gib Z

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    Sure as hell wouldn't get me anywhere...
     
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