According to the given diagram, x is the complement to the angle that is vertical to the known angle.
Vertical angles have the same measure, it means that the complement of x is 73°.
Using the definition of complementary angles, we have that the sum of x and 73 is 90, find x using this information:
[tex]\begin{gathered} x+73=90 \\ x=90-73 \\ x=17 \end{gathered}[/tex]
x has a value of 17.
