A straight highway leads to the foot of a tower. A man standing at the top of the tower observes a car at an angle of depression of `30o` , which is approaching the foot of the tower with a uniform speed. Six seconds later, the angle of depres
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A 5 percent fall in the price of X leads to a 10 percent rise in demand for X. A2 per cent reise in the price of Y leads to a 6 percent fall in demand
`E_(P) " of "X=(10)/(-5)=(-)2` `E_(P) " of "Y=(-6)/(2)=(-)3`
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A car moving at a speed 10 m/s on a straight road is ahead of car B moving in the same direction at 6 m/s. Find the velocity of A relative
Given: vA = 10 m/s, vB = 6 m/s, To find: (i) Velocity of A relative to B (vA – vB) (ii) Velocity of B relative to A (vB – vA) Formulae: (i) vAB = vA – vB (ii) vBA =...
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The top of a building from a fixed point is observed at an angle of elevation `60^(@)` and the distance from the foot of the building to the point is
Correct Answer - `100sqrt3` m
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The angle of depression of the top of the tower from the top of a building is `30^(@)` and angle of elevation of the top of the tower from the bottom
Correct Answer - `(20(1+sqrt3))/(sqrt3)m`
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A tower stands vertically on the ground. From a point on the ground, 20m away from the foot of the tower, the angle of elevation of the top of the tow
Correct Answer - `34.64 m`
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On a horizontal plane there is a vertical tower with a flag pole on the top of the tower. At a point 9 metres away from the foot of the tower the angl
Correct Answer - `5.19 m, 10.38 m`
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If the angles of elevation of the top of a tower from two points at distances a and b from the base and in the same straight line with it are compleme
Correct Answer - `6.83 m`
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From the top of a vertical tower, the angles of depression of two cars, in the same straight line with the base of the tower, at an instant are found
Correct Answer - `136.6 m`
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From the top of a building `A B` , 60 m high, the angles of depression of the top and bottom of a vertical lamp post `C D` are observed to be `30o` an
Correct Answer - `6(sqrt(3) + 1)` minutes
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A man observes a car from the top of a tower, which is moving towards the tower with a uniform speed. If the angle of depression of the car change fro
Correct Answer - `473.2 m`
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