EXPLANATION:
Given;
We are told that two angles are complementary and one of the angles measure x degrees.
Required;
We are required to find an expression for the measure of the second angle.
Step-by-step solution;
For two angles that are described as complementary, they both add up to 90 degrees.
If one of the angles measures x degrees, we simply subtract that measure from the total of 90 and that gives us the angle measure of the second angle.
Therefore, the expression that would represent the second angle is;
[tex]\begin{gathered} Let\text{ }the\text{ }other\text{ }angle\text{ }be\text{ }y: \\ x+y=90 \\ Therefore: \\ y=90-x \end{gathered}[/tex]Hence, the other angle would be represented by the expression;
ANSWER:
[tex](90-x)\degree[/tex]