Home
Class 11
MATHS
The elevation of an object on a hill is...

The elevation of an object on a hill is observed from a certain point in the horizontal plane through its base, to be `30^@`. After walking 120 metres towards it on level ground the elevation is found to be `60^@` . Then the height of the object (in metres ) is

A

` 120 `

B

` 60 sqrt3`

C

` 120 sqrt3`

D

`60`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - II|148 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE EXERCISE|132 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise ADDITIONAL EXERCISE|12 Videos

  • PLANES

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTIONS|30 Videos

  • PROPERTIES OF VECTORS

    AAKASH SERIES|Exercise PRACTICE EXERCISES|55 Videos

Similar Questions

Explore conceptually related problems

The elevation of top of a hill is observed from a certain point in the horizontal plane through its base, to be 30^(@) . After walking 120 meters towards it on level ground the elevation is found to be 60^(@) . Then the height of the object (in meters) is

At a certain point the angle of elevation of a tower is found to be cot^(-1)(3/5) . On walking 32 metres directly towards the tower its angle of elevation is cot^(-1)(2/5) . The height of the tower in metres is

At the foot of the mountain the elevation of its summit is 45^(@) After ascnding 100 mt towards the mountain up a slope of 30^(@) inclination is found to be 60^(@) . The height of the mountain is

From a point on the level ground, the angle of elevation of the top of a pole is 30^@ . On moving 20 metres nearer, the angle of elevation is 45^@ . Then the height of the pole, in metres , is

The angle of elevation of an object from a point P on the level ground is a. Moving d metres on the ground towards the object, the angle of elevation is found to be beta . Then the height (in metres) of the object is

From a point on the level ground , the angel of elevation of the top of a pole is 30^(@) . On moving 20 meters nearer, the angle of elevation is 45^(@) . Then the height of the pole, in meters, is

The angle of elevation of an object from a point P on the level ground is alpha . Moving d metres on the ground towards the object, the angle of elevation is found to be beta . Then the height (in metres -of the object is

The angle of elevation of a tower from a point on the same level as the foot of the tower is 30^@ on advancing 150 meters towarsd the foot of the tower, the angle of elevation of the tower becomes 60^@ . Find the height of the tower.

AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - 1
  1. A tree is broken by wind, its upper part touches the ground at a point...

    Text Solution

    |

  2. The angle of elevation of an object from a point P on the level ground...

    Text Solution

    |

  3. The shadow of the tower standing on a level ground is found to be 60 m...

    Text Solution

    |

  4. A person standing on the bank of a river observes that the angle subte...

    Text Solution

    |

  5. The angle of elevation of the top of an unfinished tower from a point ...

    Text Solution

    |

  6. If a flag staff of 6 mt high placed on the top of a tower throws a sha...

    Text Solution

    |

  7. A sphere of radius 'a' subtends an angle 60^(@) at a point P. Then the...

    Text Solution

    |

  8. Two tress A and B are on the same side of a river . From a point C in ...

    Text Solution

    |

  9. Two ships leave a port at the same time . One goes 24km per hour in th...

    Text Solution

    |

  10. If tan "" (A ) /(2) = (5)/(6) , tan "" ( B)/(2) = ( 20 )/( 37) " t...

    Text Solution

    |

  11. In a triangle ABC if (cos A)/a=(cos B)/b= (cos C)/c, then Delta ABC is

    Text Solution

    |

  12. In Delta ABC, if sin C=(sin A)/(2 cos B) then the triangle is

    Text Solution

    |

  13. The angle of elevation of the sun when length of the shadow of a pole ...

    Text Solution

    |

  14. The elevation of an object on a hill is observed from a certain point...

    Text Solution

    |

  15. A flag staff of length 10 mt stands on a tower if from a point on the ...

    Text Solution

    |

  16. The shadow of a tower standing on a level plane is found to be 50 mt l...

    Text Solution

    |

  17. A tree stands vertically on the slant of the hills From a point A on t...

    Text Solution

    |

  18. If Delta ABC is such that angle A = 90 ^(@) , angle B ne angle C " ...

    Text Solution

    |

  19. In Delta ABC, if 8R^(2) = a^(2) + b^(2) + c^(2), then the triangle is ...

    Text Solution

    |

  20. In Delta ABC, if 2R + r = r(2) then angleB =

    Text Solution

    |