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Math Help - Find all soultions

  1. #1
    Member purplec16's Avatar
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    Find all soultions

    sin^2t-4sint+1=0

    Ok I know your suppose to subsitute it for x or u, but I cant seem to be able to solve that quadratic
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  2. #2
    MHF Contributor
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    Are you saying that you cannot solve x^{2}-4x+1 = 0?

    Are you sure you want to stay with that opinion? Give it one more try before you give up.
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  3. #3
    MHF Contributor

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    You can't factor it with integer coefficients.

    Complete the square or use the quadratic formula.
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