Since interior angles of any triangle add up to 180 degrees, we have
[tex]\angle MKH+\angle KHM+\angle KMH=180[/tex]
Now, by substituting the given values, we get
[tex]90+51.6+\angle KMH=180[/tex]
which gives
[tex]141.6+\angle KMH=180[/tex]
Then, by subtracting 141.6 to both sides, we have
[tex]\angle KMH=38.4[/tex]
Then, by comparing with the given options, the answer is the last option.
