How to convert a signal from frequency domain to time domain?

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Is it right this relationship?

$y(\omega)=A(\omega)\cdot e^{j \phi(\omega)}$ can be written as $y(\omega)=y(t)=A(\omega) \cdot \sin[\omega t + \phi(\omega)]$

Because I got several couples of amplitude and phases, each couple associated to a certain frequency, so that:

$\omega_1 \rightarrow (A_1,\phi_1)$

$\omega_2 \rightarrow (A_2,\phi_2)$

and so on.

Assuming that in a certain time instant, $t=1$, the frequency is equal to $\omega_1$, how can I build that signal in the time domain? Is it right to state:

$y(t_1) = y(\omega_1)=A_1 \cdot e^{j \phi_1}=A_1 \cdot \sin(\omega_1 t_1 + \phi_1)$

or not?