UPSC CDS Math Height and Distances Questions

Question : 6 of 25

Marks: +1, -0

From a height of h units, a man observes the angle of elevation as a and angle of depression as p of the top and the bottom respectively of a tower of height H (> 4h). To what further height should he climb so that the values of angle of elevation and angle of depression get interchanged for the top and bottom of the tower ?