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Trig problem

  1. Apr 13, 2010 #1
    1. The problem statement, all variables and given/known data A and B are real numbers satisfying 2(sinA+cosB)sinB=3-cosB. Find 3tan^2A+4tan^2B



    2. Relevant equations Trig Identities



    3. The attempt at a solution well, i expanded 3tan^2A+4tan^2B= 3sin^2A*cos^2B+4sin^2B*cos^2A all over cos^2A*cos^2B after that I am stuck :x
     
    Last edited: Apr 14, 2010
  2. jcsd
  3. Apr 14, 2010 #2

    HallsofIvy

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    Are we to assume that "A" is the same as "a" and that "B" is the same as "b"?
     
  4. Apr 14, 2010 #3
    yes, let me edit that :x
     
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