To convert a temperature from Kelvin (K) to Fahrenheit (°F), you can use the following formula:
\[ °F = \left( K - 273.15 \right) \times \frac{9}{5} + 32 \]
Now, substituting 77 K into the formula:
\[ °F = \left( 77 - 273.15 \right) \times \frac{9}{5} + 32 \]
Calculating \( 77 - 273.15 \):
\[ 77 - 273.15 = -196.15 \]
Now, multiplying by \( \frac{9}{5} \):
\[ -196.15 \times \frac{9}{5} = -352.71 \]
Finally, adding 32:
\[ °F = -352.71 + 32 = -320.71 \]
Rounding this to the nearest integer gives:
\[ °F \approx -321 \]
Therefore, the temperature in degrees Fahrenheit is -321°F.