What is the complementary angle of 20 degrees? Here we will define the complementary angle of 20 degrees, show you how to calculate the complementary angle of 20 degrees, and even illustrate the complementary angle of 20 degrees (20°) so you have a solid understanding of what it means.
The complementary angle of 20 degrees, also known as the complement angle of 20 degrees, is the angle that when added to 20 results in a sum of 90. Therefore, to calculate the complement angle of 20 degrees, we subtract 20 from 90. Here is the formula, the math, and the answer:
90 - angle = complement angle
90 - 20 = 70
70 degrees
20 degrees plus the complementary angle of 70 degrees equals 90 degrees, which means that together they will make an L-shaped 90-degree angle.
The illustration below shows 20 degrees colored in red and the complementary angle of 20 degrees, which is 70 degrees, colored in green.
As you can see from the illustration above, 20 degrees and 70 degrees form an L-shaped angle together. This proves that the two angles, 20 degrees and 70 degrees, are complementary angles.
Complementary Angle Calculator
Let us calculate another complementary angle for you!
Complementary angle of 20.1 degrees
Here is another trigonometry math problem that we have illustrated and calculated the answer to.