SAE Mathematics Practice Exam

Question: 1 / 400

What is the complementary angle of \( 30^\circ \)?

30°

45°

60°

To determine the complementary angle of \( 30^\circ \), we need to understand the concept of complementary angles. Two angles are considered complementary if their measures add up to \( 90^\circ \).

In this case, we take \( 30^\circ \) and find the angle that, when added to it, equals \( 90^\circ \). The calculation is straightforward:

\[

90^\circ - 30^\circ = 60^\circ

\]

This means the angle that complements \( 30^\circ \) is \( 60^\circ \). Therefore, the correct answer is indeed \( 60^\circ \), which makes it clear that when adding \( 30^\circ \) and \( 60^\circ \), the total is \( 90^\circ \), confirming they are complementary.

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