The angle of elevation of the top of a tower from a certain point is 30°. If the observer moves 40 m towards the tower, the angle of elevation of the top of the tower increases by 15°. The height of the tower is:
A.62.2 m
B.64.2 m
C.52.2 m
D.54.6 m
Answer:D
The angle of elevation of the top of a tower from a certain point is 30°. If the observer moves 40 m towards the tower, the angle of elevation of the top of the tower increases by 15°. The height of the tower is:
A.62.2 m B.64.2 m C.52.2 m D.54.6 m