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 -
A.44.6 m
B.54.6 m
C.64.6 m
D.74.6 m
Answer:B
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 -
A.44.6 m B.54.6 m C.64.6 m D.74.6 m