An aeroplane is flying horizontally at a...

An aeroplane is flying horizontally at a height of 1.8km above the ground. The angle of elevation of plane X is `60^@` and after 20 seconds, its angle of elevation from X is become `30^@`.If point X is on ground, then what is the speed (in km/hr) of aeroplane?

`216 sqrt3`

`105 sqrt3`

`201 sqrt3`

`305 sqrt3`

Text Solution

AI Generated Solution

Topper's Solved these Questions

2017 TIER-II PAPER(11)
CHAMPION PUBLICATION|Exercise EXERCISE|100 Videos
2017 TIER-II PAPER(13)
CHAMPION PUBLICATION|Exercise EXERCISE|100 Videos

Similar Questions

Explore conceptually related problems

A aeroplane is flying horizontally with speed of 432km/hr at higher h meter from ground.Its angle of elevation from a point on ground is 60^(@) .After 20 sec its angle of elevation from same point is 30^(@) then the height h is equal to

An aeroplane flying horiontally 1 km above the ground is observed at an elevation of 60^@ and after 10 seconds the elevation is observed to be 30^@ . The uniform speed of the aeroplane in km/h is

An aeroplane flying horizontally,1km above the ground,is observed at an elevation of 60^(@) after 10 seconds,its elevation is observed to be 30^(@). Find the speed of the aeroplane in km/hr.

An aeroplane flying horizontally 1km above the ground is observed at an elevation of 60o . After 10 seconds,its elevation is observed to be 30o. Find the speed of the aeroplane in km/hr.

The angle of elevation of an aeroplane from a point on the ground is 60^(@) . After flying for 30 seconds, the angle of elevation charges to 30^(@) . If the aeroplane is flying at a height of 4500 m, then what is the speed (in m/s) of aeroplane

The angle of elevation of an aeroplane from a point on the ground is 60^(@) .After flying for 30 seconds ,the angle of elevation changes to 30^(@) .If the aeroplane is flying at a height of 1500sqrt(3) metre , then what is the speed (in m/s) of aeroplane?

CHAMPION PUBLICATION-2017 TIER-II PAPER(12)-EXERCISE

A pole is standing on the top of a house. Height of house is 25 metres...
Text Solution
|
A ladder is placed against a wall such that it just reaches the top of...
Text Solution
|
An aeroplane is flying horizontally at a height of 1.8km above the gro...
Text Solution
|
The table given below shows the production of maize by 5 different sta...
Text Solution
|
The table given below shows the, production of maize by 5 different st...
Text Solution
|
The table given below shows the production of maize by 5 different sta...
Text Solution
|
The table given below shows the, production of maize by 5 different st...
Text Solution
|
The table given below shows the, production of maize by 5 different st...
Text Solution
|
If x beakers of 100 ml containing 1: 4 acid-water solution are mixed w...
Text Solution
|
In what ratio should 20% ethanol solution be mixed with 40% ethanol so...
Text Solution
|
A and B start a business by investing equal amounts. Four months later...
Text Solution
|
A and B invest in a business in the ratio 3 : 7. The business makes a ...
Text Solution
|
A can do a work in 72 days and B in 90 days. If they work on it togeth...
Text Solution
|
A is thrice as good a workman as B. C alone takes 48 days to paint a h...
Text Solution
|
C is 5 times as productive as B. A takes 60 days to complete a task. ...
Text Solution
|
A can complete 50% of a job in 9 days and B can complete 25% of the jo...
Text Solution
|
Giving two successive discounts of 60% is equal to giving one discount...
Text Solution
|
If an item marked at Rs 480 is being sold at Rs 400, then what is the ...
Text Solution
|
On an item there is cash 5% discount on the marked price of Rs 25,000....
Text Solution
|
A retailer marks up his goods by 20% and then offers 25% discount. Wha...
Text Solution
|