Final answer:
The complement of a 57-degree angle is 33 degrees, which is calculated by subtracting the angle from 90 degrees.
Step-by-step explanation:
The measure of the complement of an angle is found by subtracting the angle's measurement from 90 degrees. For an angle measuring 57 degrees, the calculation would be:
90 degrees - 57 degrees = 33 degrees.
Therefore, the complement of an angle measuring 57 degrees is 33 degrees.