To convert degrees to radians, you can use the formula:
radians = degrees × (π / 180)
In this case, we want to convert 20 degrees to radians. So, we substitute 20 for degrees in the formula:
radians = 20 × (π / 180)
This simplifies to:
radians = (20π) / 180
Now, we can reduce the fraction:
radians = (1π) / 9
Therefore, 20 degrees is equal to:
20 degrees = π / 9 radians
In summary, 20 degrees is approximately 0.3491 radians when expressed as a decimal.