Question: Numerically Solve for t

How do I find for which t is the following equation true?

(0.575849 Cos[(0.383015 t \[Tau])/\[HBar]] Sin[(
      0.383015 t \[Tau])/\[HBar]] -
    1.66533*10^-16 Cos[(2.33523 t \[Tau])/\[HBar]] Sin[(
      0.383015 t \[Tau])/\[HBar]] +
    1.11022*10^-16 Cos[(0.383015 t \[Tau])/\[HBar]] Sin[(
      2.33523 t \[Tau])/\[HBar]] +
    1.01122 Cos[(2.33523 t \[Tau])/\[HBar]] Sin[(
      2.33523 t \[Tau])/\[HBar]])^2 + (0.462311 Cos[(
      0.383015 t \[Tau])/\[HBar]]^2 +
    3.33067*10^-16 Cos[(0.383015 t \[Tau])/\[HBar]] Cos[(
      2.33523 t \[Tau])/\[HBar]] +
    0.537689 Cos[(2.33523 t \[Tau])/\[HBar]]^2 -
    0.462311 Sin[(0.383015 t \[Tau])/\[HBar]]^2 -
    1.38778*10^-16 Sin[(0.383015 t \[Tau])/\[HBar]] Sin[(
      2.33523 t \[Tau])/\[HBar]] -
    0.537689 Sin[(2.33523 t \[Tau])/\[HBar]]^2)^2 == 1