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Trigonometric Limit Problem

  1. Aug 25, 2012 #1
    1. The problem statement, all variables and given/known data
    find the limit as x approaches 0 of 3sin4x / sin3x


    2. Relevant equations
    sin2x = 2sinxcosx
    lim as x ->0 of sinx / x =1


    3. The attempt at a solution
    sin4x = 2 sin2x cos2x
     
  2. jcsd
  3. Aug 25, 2012 #2
    Divide and multiply both numerator and denominator with the angles of resective sin .
    You will get one famous limit , after that its a breeze :cool:
     
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