Question

Find k and l using angles of elevation and depression

Answer 1

The given triangle is right angled.

Using trigonometric properties for a right triangle,

`\begin{gathered} \tan \theta=\frac{opposite\text{ side}}{\text{adjacent side}} \\ \end{gathered}`
`\begin{gathered} \tan 15\degree=(10)/(l) \\ l=(10)/(\tan 15\degree) \\ l=37.32 \end{gathered}`