Two angles are complementary when they add up to 90 degrees (a Right Angle).
That means that if two angles, A° and B°, are complementary, they add up to 90°:
[tex]A^{\circ}+B^{\circ}=90^{\circ}[/tex]Therefore, if we have one angle as 72.3°, the complement will be calculated as
[tex]\begin{gathered} 90-72.3 \\ =17.7\degree \end{gathered}[/tex]The complement of 72.3° is 17.7°.
