Let's take a look at the screen:
Using the Pythagorean theorem,
[tex]85^2=67^2+y^2[/tex]Solving for y,
[tex]\begin{gathered} 85^2=67^2+y^2 \\ \rightarrow y^2=85^2-67^2 \\ \rightarrow y=\sqrt[]{85^2-67^2} \\ \rightarrow y=52.3 \end{gathered}[/tex]Therefore, the TV is 52.3" tall
