To convert 20°C to degrees Fahrenheit using the formula \( F = \frac{9}{5}C + 32 \):
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Substitute \( C = 20 \) into the formula:
\[ F = \frac{9}{5} \times 20 + 32 \]
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Calculate \( \frac{9}{5} \times 20 \):
\[ \frac{9 \times 20}{5} = \frac{180}{5} = 36 \]
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Now add 32 to the result:
\[ F = 36 + 32 = 68 \]
Thus, the temperature in degrees Fahrenheit is \( \boxed{68} \).