According to the definition, two angles are said to be complementary is the sum of their measure is 90 degrees.
[tex]m\text{Angle 1}+m\text{Angle 2}=90^{\circ}[/tex]Given that angle 1 measures 'x' degrees,
[tex]x^{\circ}+mAngle2=90^{\circ}\Rightarrow mAngle2=90^{\circ^{}}-x^{\circ}[/tex]Thus, the measure of angle 2 is obtained in terms of 'x'.
