In ΔDEF, the measure of ∠F=90°, DF = 24, FE = 7, and ED = 25. What ratio represents the sine of ∠E?

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Explanation:
Check out the drawing below.
The sine ratio involves opposite over hypotenuse, so we'll use sides DF and ED.
sin(angle) = opposite/hypotenuse
sin(E) = DF/ED
sin(E) = 24/25