The complement of an angle is another angle that, when added to the first angle, it's equal to 90°.
In other words, the sum of a number and its complement is always equal to 90°.
Using the variable x to represent the complementary angle, we can write the following equation:
[tex]80+x=90[/tex]Then, solving the equation for x, we have:
[tex]\begin{gathered} x=90-80 \\ x=10\degree \end{gathered}[/tex]So the complement of 80° is equal to 10°.
