The angle of elevation of the top of a tower from a certain point is 30°. If the observed moves 20 m towards the tower, the angle of elevationthe angle of elevation of top of the tower increases by 15°. The height of the tower is

The angle of elevation of the top of a tower from a certain point is 3

1.	The angle of elevation of the top of a tower from a certain point is 30°. If the observed moves 20 m towards the tower, the angle of elevationthe angle of elevation of top of the tower increases by 15°. The height of the tower is
A.	7.3 m
B.	1.9 m
C.	7.3 m
D.	0 m
Answer» D. 0 m