Home
Class 14
MATHS
On walking 120 m towards a chimney in a ...

On walking 120 m towards a chimney in a horizontal line through its base the angle of elevation of tip of the chimney changes from 30° to 45°. The height of the chimney is :

A

120 m

B

60(`sqrt3` -1)m

C

60(`sqrt3`+1)m

D

None of the above

Text Solution

AI Generated Solution

Promotional Banner

Similar Questions

Explore conceptually related problems

On walking 120 m towards a chimney in a horizonatal line through its base the angle of elevation of tip of the chimney changes from 30^@ " to " 45^@ . The height of the chimney is

It is found that on walking x metres towards a chimney in a horizontal line through its base, the elevation of its top changes from 30o to 60o . The height of the chimney is 3sqrt(2)x (b) 2sqrt(3)x (c) (sqrt(3))/2x (d) 2/(sqrt(3))x

Find the height of the chimney when it is found that on walking towards it 50 meters in the horizontal line through its base, the angle of elevation of its top changes from 30^(@) to 60^(@) .

A man walks 10 m towards a lamp post and notices that the angle of elevation of the top of the post increases from 30^(@) to 45^(@) the height of the lamp post is

A man walks 10m towards a lamp post and notices that the angle of elevation of the top of the post increases from 30^(@) to 45^(@) . The height of the lamp posts is :

An observer 1.5 m tall is 20sqrt(3) m away from a chimney. The angle of elevation from the top of the chimney from his eyes is 30° and from bottom is 45°. Find the height of the chimney.

At a point on a horizontal line through the base of a monument the angle of elevation of the top of the monument of the top of the monument is found to be such that its tangent is (1)/(5) . On walking 138 metres towards the monument the secant of the angle of elevation is found to be (sqrt(193))/(12) .The height of the monument (in metre ) is

An observer 1.5m tall is 28.5m away from a chimney.The angle of elevation of the top of the chimney from her eyes is 45^(@) What is the height of the chimney?