19. Five mark example problem VI

The horizontal distance between two buildings is \(140 \ m\). The angle of depression of the top of the first building when seen from the top of the second building is \(30^\circ\). If the height of the first building is \(60 \ m\), find the height of the second building. \((\sqrt{3} = 1.732)\)

 

Answer:

 

The height of the second building \(=\)  

 

(Note: Enter the number in the first box and the unit (short form)  in the second box. Round off the answers to \(2\) decimal places.)