It is given that the angle of depression is 9 degrees and the glider is flying at altitude of 100 m. The diagram is given below:
To find the value of x use the trigonometric tan ratio to get:
[tex]\begin{gathered} \tan 9=\frac{100}{x} \\ x=\frac{100}{\tan 9}\approx631 \end{gathered}[/tex]Hence the distance of the glider from the landing pad is 631 meters.