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Homework Help: Need help solving for 't'

  1. Dec 7, 2013 #1
    1. The problem statement, all variables and given/known data

    Solve for 't'
    1/2+pi/4 = (9.8/4)cos2t + sin(2t)

    3. The attempt at a solution

    I don't know what's wrong with my brain today but every attempt came up empty :P
  2. jcsd
  3. Dec 7, 2013 #2


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    Staff Emeritus
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    Absent some Jedi mind tricks, most trig equations require an iterative method of solution.
  4. Dec 7, 2013 #3
    Nice to know the brain is still functioning properly, it's been a long day :P
  5. Dec 7, 2013 #4

    Ray Vickson

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    Re-write the right-hand-side in the form A*cos(2t + ω), where A is the amplitude and ω is the 'phase'. Use the trigonometric addition formulas to (eventually) get numerical values for A and ω.
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