To solve for the missing angle using the inverse sine function, you'll need to know the ratio of the opposite side to the hypotenuse in a right triangle. The inverse sine function is defined as:
\[ \theta = \sin^{-1}\left(\frac{\text{opposite}}{\text{hypotenuse}}\right) \]
However, you've not provided specific values for the sides of the triangle or any other context to determine which angle is the missing one.
If you provide the necessary information (like the lengths of the sides), I can help you calculate the missing angle using the inverse sine function. Otherwise, I cannot determine which of the angles (45°, 57°, 54°, or 49°) is the correct answer without additional data.
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