Question

Write the complement of an angle of measure $x^{\circ }$.

Answer 1

Let the required complement angle be $y^{\circ }$

We know that,
Sum of the complementary angles is ${90}^{\circ }$
$\therefore x^{\circ }+y^{\circ }={90}^{\circ }$
$y^{\circ }=(90-x{)}^{\circ }$

Hence, the required angle is $(90-x{)}^{\circ }$.