A complete rotation is 360 degrees. To find the fraction of a complete rotation that 0.75 degrees represents, you can use the following formula:
\[ \text{Fraction of complete rotation} = \frac{\text{angle}}{\text{total degrees in a complete rotation}} \]
Substituting the values:
\[ \text{Fraction} = \frac{0.75}{360} \]
Now, simplify this fraction:
\[ \text{Fraction} = \frac{0.75}{360} = \frac{75}{36000} = \frac{1}{480} \]
Thus, 0.75 degrees is \(\frac{1}{480}\) of a complete rotation.