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Aptitude - Height and Distance - Discussion

Discussion Forum : Height and Distance - General Questions (Q.No. 2)
Height and Distance
2.
A man standing at a point P is watching the top of a tower, which makes an angle of elevation of 30° with the man's eye. The man walks some distance towards the tower to watch its top and the angle of the elevation becomes 60°. What is the distance between the base of the tower and the point P?
43 units
8 units
12 units
Data inadequate
None of these
Answer: Option
Explanation:

One of AB, AD and CD must have given.

So, the data is inadequate.

Discussion:
43 comments Page 2 of 5.
Bishal bhowmik said:   3 years ago
Please explain the answer properly.
(1)
Sai pusunur said:   3 years ago
Anyone, explain the right answer.
(1)
Raji said:   1 decade ago
The distance between the base of the tower and the distance at which the man stands from the pole must be given. Otherwise this problem can not be solved. And hence the answer (D).
(1)
Karthick said:   8 years ago
I am not getting it, Please explain me.
Deepak said:   6 years ago
Can you please explain briefly. I am not getting the point.
Mamta puri said:   7 years ago
Please explain it briefly.
Jaidev said:   7 years ago
No, @Jhanvi.

If you take h as the height of the tower, b as the distance from P to the base of the tower and when the person walks to a new point lets say Q, so take x= distance from Q to base of the tower. Now solving these we have tan30=h/b and tan60=h/x. We are left with 3 unknowns and only two equations. Therefore the solution cannot be found.
Lokesh said:   7 years ago
Inadequate data. Some distance or meter should be there to predict the answer.
Jhanvi said:   7 years ago
The Answer should be 4 units.
Ankush sapehia said:   7 years ago
The Answer is D.
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