What is the complementary angle of 72 degrees? Here we will define the complementary angle of 72 degrees, show you how to calculate the complementary angle of 72 degrees, and even illustrate the complementary angle of 72 degrees (72°) so you have a solid understanding of what it means.
The complementary angle of 72 degrees, also known as the complement angle of 72 degrees, is the angle that when added to 72 results in a sum of 90. Therefore, to calculate the complement angle of 72 degrees, we subtract 72 from 90. Here is the formula, the math, and the answer:
90 - angle = complement angle
90 - 72 = 18
18 degrees
72 degrees plus the complementary angle of 18 degrees equals 90 degrees, which means that together they will make an L-shaped 90-degree angle.
The illustration below shows 72 degrees colored in red and the complementary angle of 72 degrees, which is 18 degrees, colored in green.
As you can see from the illustration above, 72 degrees and 18 degrees form an L-shaped angle together. This proves that the two angles, 72 degrees and 18 degrees, are complementary angles.
Complementary Angle Calculator
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Complementary angle of 72.1 degrees
Here is another trigonometry math problem that we have illustrated and calculated the answer to.