Given a right angle triangle
As shown in the figure:
Side x is the opposite to the angle 68
Side 21 is adjacent to the angle 68
We will use the tan function to find x:
[tex]\begin{gathered} \tan 68=\frac{opposite}{adjacent} \\ \\ \tan 68=\frac{x}{21} \\ \\ x=21\cdot\tan 68=51.9768 \end{gathered}[/tex]
Rounding to the nearest tenth
So, the answer will be x = 52
