A man on the top of a vertical tower observes a car moving at a uniform speed
towards the tower on a horizontal road. If it takes 18 min. for the angle of
depression of the car to change from to
; then after this, the time taken
(in min.) by the car to reach the foot of the
tower, is :
As we have learned
Angle of Elevation -
If an object is above the horizontal line from the eye, we have to raise our head to view the object.
- wherein
Option 1)
This is correct
Option 2)
This is incorrect
Option 3)
This is incorrect
Option 4)
This is incorrect
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