Respuesta :

SOLUTION

The angles are on a straight line.

Sum of angles on a straight line = 180 degrees

So

[tex]\begin{gathered} 50^o+\text{HKI}+42^o=180^o \\ \text{HKI}+92=180 \\ \text{HKI}=180-92 \\ \text{HKI}=88^o \end{gathered}[/tex]