Question

In ( triangle A B D )
( A D=B D quadleft(because 45^{circ}-45^{circ}-90^{circ} text { triangle }right) )
( therefore B D=30 mathrm{m} )
In ( triangle A C D )
(1) ( 47 cdot 32 )

# 40. The angles of elevation of the top of a tower 30 m. High, from two points on the level ground on its opposite sides are 45° and 60° what is the distance between the two points? (1) 47.32 m (2) 41.23 m (3) 38.12 m (4) 52.10 m

Solution