Answer:
12.22
Step-by-step explanation:
To find HI, you have to use tangent. tanx=[tex]\frac{opposite}{adjacent}[/tex]
tan(42°)=[tex]\frac{11}{HI}[/tex] , then you multiply HI to both sides of equation and divide tan(42).
To get HI=[tex]\frac{11}{tan(42)}[/tex]
Which makes HI equal 12.2167