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Q:

When a 50 decimeter long ladder is placed with the wall, it reaches up to the window only. If the window is 48 decimeter up from the land, then find out the distance of the lower face of the ladder from the wall.

 

A) 14 decimeter B) 10 decimeter
C) 11 decimeter D) 12 decimeter

Answer:   A) 14 decimeter



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Q:

A girl is observing a bird silting at a height of 500 in from the ground. The angle of elevation of the bird from the girl's eyes is 45° at the initial position. After some time, the girl moves on the ground towards the bird by 50 in and bird flies away from her At this point, the angle of elevation reduces to 30°. Find the distance travelled by the bird. Take 3=1.73.

 

A) 915 m B) 415 m
C) 365 m D) 315 m
 
Answer & Explanation Answer: B) 415 m

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Q:

The angle of elevation of a bird from a point 60 m above the water in a pond is 30°. The angle of depression of the reflection of the bird under the water from the same point is 60°. Find the height of the bird in metres hovering over the pond.

 

A) 60 B) 150
C) 120 D) 90
 
Answer & Explanation Answer: C) 120

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0 222
Q:

Seema flies a kite on a 16 m string at an inclination of 60 deg. What is the height (h) of the kite above the ground?

 

A) 4√3 m B) 8√3 m
C) 6√3 m D) 16√3 m
 
Answer & Explanation Answer: B) 8√3 m

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0 214
Q:

From a tower 18 m high the angle of elevation of the top of a tall building is 45° and the angle of depression of the bottom of the same building is 60°. What is the height of the building in metres?

 

A) 12 + 63 B) 6(3 +3)
C) 18 + 2 D) 6(3 + 32 )
 
Answer & Explanation Answer: B) 6(3 +3)

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0 261
Q:

From the top of a platform 5 m high, the angle of elevation of a tower was 30 deg. If the tower was 45 m high, how far away from the tower was the platform positioned?

A) 15√3 m B) 40√3 m
C) 45√3 m D) 40 m
 
Answer & Explanation Answer: B) 40√3 m

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Q:

The angle of elevation of the top of a 36 m tall tower from the initial position of a person on the ground was 60 deg. She walked away in a manner that the foot of the tower, her initial position and the final position were all in the same straight line. The angle of elevation of the top of the tower from her final position was 30 deg. How much did she walk from her initial position?

 

A) 24√3 m B) 12√3 m
C) 24 m D) 36√3 m
 
Answer & Explanation Answer: D) 36√3 m

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Q:

The angle of elevation of the top of a tower at a distance of 25 m from its foot is 60 deg. The approximate height of the tower is

A) 20.3 m B) 15.3 m
C) 36.3 m D) 43.3 m
 
Answer & Explanation Answer: D) 43.3 m

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2 607
Q:

The height of a light house is 20 mts above sea level. The angle of depression (from the top of the lighthouse) of a ship in the sea is 30 deg. What is the distance of the ship from the foot of the light house?

A) 16 m B) 20√3 m
C) 20 m D) 30 m
 
Answer & Explanation Answer: B) 20√3 m

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