29. Five mark exercise problem V

From the top of the tower $60 \ m$ high the angles of depression of the top and bottom of a vertical lamp post are observed to be $38^{\circ}$ and $60^{\circ}$ respectively. Find the height of the lamp post. ($tan \ 38^{\circ} = 0.7813$, $\sqrt{3} = 1.732$)

 

Answer:

 

The height of the lamp post is  .

 

(Note: Enter the number in the first box and the unit (short form) in the second box.)