hello can you help me solve this plane trigonometry question please and thank you for your time if you are reading this

We have the following:
adjacent leg = a
hypotenuse = h
[tex]\cos \theta=\frac{a}{h}[/tex]replacing:
[tex]\begin{gathered} \cos \theta=\frac{11}{12} \\ \cos \theta=0.916 \\ \theta=\cos ^{-1}(0.916) \\ \theta=23.56 \end{gathered}[/tex]The angles is 23.6°