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ADDA Mechanical Drafter Certification Practice Exam

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What is the angle complementary to 60 degrees?
Correct Answer:
30 degrees
Explanation:
The angle that is complementary to another angle is found by subtracting that angle from 90 degrees. In this case, to find the angle complementary to 60 degrees, you would calculate: 90 degrees - 60 degrees = 30 degrees. Thus, 30 degrees is the amount needed to sum with 60 degrees to equal 90 degrees, thereby fulfilling the definition of complementary angles. This means whenever you add 60 degrees and 30 degrees, the total equals 90 degrees, confirming that 30 degrees is indeed the correct complementary angle. Other options do not meet the criteria for being complementary to 60 degrees, as they either exceed 90 degrees or do not satisfy the necessary addition to reach that total.

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