Home
Class 10
MATHS
A bird is sitting on the top of a 80 m h...

A bird is sitting on the top of a 80 m high tree. From a point on the ground, the angle of elevation of the bird is `45^@`. The bird flies away horizontally in such a way that it remained at a constant height from the ground. After 2 seconds, the angle of elevation of the bird from the same point is `30^@`. Find the speed of the height of the bird.`(Take sqrt 3 = 1.732)`

Promotional Banner

Topper's Solved these Questions

  • COORDINATE GEOMETRY

    AGRAWAL PUBLICATION|Exercise EXAMPLE|70 Videos
  • PAIR OF LINEAR EQUATIONS IN TWO VARIABLES

    AGRAWAL PUBLICATION|Exercise EXAMPLE|54 Videos

Similar Questions

Explore conceptually related problems

A bird is sitting on the top of an 80 m high tree. From a point on the ground, the angle of elevation of the bird is 45^(@) . The bird flies away horizontally in such a way that it remained at a constant height from the ground. After 2 seconds, the angle of elevation of the bird from the same point is 30^(@) . Find the speed of flying of the bird. (Take sqrt3=1.732 ).

A bird is sitting on the top of a 80 m high tree. From a point on the ground, the angle of elevation of the bird is 45. The bird flies away horizontally in such a way that it remained at a constant height from the ground. After 2sec the angle of elevation of the bird from the same point is 30. Find the speed of flying of the bird.

A bird is sitting on the top of a 80 m high tree. From a point on the ground, the angle of elevation of the bird is theta is 45. The flies away horizontaly in such a way that it remained at a constant height from the ground.After 2 sec the angle of elevation of bird from the same point is theta is 30.Find the speed of flying of the bird.

The angle of elevation of the top of a tower from a point 40 m away from its foot is 60^(@) . Find the height of the tower.

At a point 20 m away from the foot of a tower, the angle of elevation of the top of the tower is 30^@ The height of the tower is

From a point on the ground which is at a distance of 50 m from the foot of the towe, the angle of elevation of the top of the tower is observed to be 30^(@) . Find the height of the tower.

From a point 20 m away from the foot of a tower, the angle of elevation of the top of the tower is 30^(@) . The height of the tower is

If the angle of elevation of the top of a tower from a point distant 100 m from its base is 45^(@) , then find the height of the tower.

AGRAWAL PUBLICATION-INTRODUCTION TO TRIGNOMETRY AND ITS APPLICATIONS-EXAMPLE
  1. A ladder rests against a vertical wall at an inclination alpha to the ...

    Text Solution

    |

  2. There are two poles, one each on either bank of a river just opposite ...

    Text Solution

    |

  3. Amit, standing on a horizontal plane, finds a bird flying at a distanc...

    Text Solution

    |

  4. Prove that: (tan theta)/(1 - cot theta) + (cot theta)/(1 - tan theta) ...

    Text Solution

    |

  5. The lower window of a house is at a height of 2 m above the ground and...

    Text Solution

    |

  6. Prove that: (sin theta)/(cot theta + cosec theta) = 2 + (sin theta)/(c...

    Text Solution

    |

  7. Prove that (sin A - cos A + 1)/(sin A + cos A - 1) = 1 /(sec A - tan A...

    Text Solution

    |

  8. A man in a boat rowing away form a light house 100 m hight takes 2 min...

    Text Solution

    |

  9. Two poles of equal heights are standing opposite each other on either ...

    Text Solution

    |

  10. The shadow of a tower at a time is three times as long as its shadow w...

    Text Solution

    |

  11. Prove that: (sin A - 2sin^3 A )/(2 cos^3 A - cos A) = tan A

    Text Solution

    |

  12. A straight highway leads to the foot of a tower. A man standing on its...

    Text Solution

    |

  13. The angle of elevation of a cloud from a point 60 m above the surface ...

    Text Solution

    |

  14. From a point P on the ground, the angles of elevation of the top of a ...

    Text Solution

    |

  15. A 1.6 m tall boy is standing at some distance from a 40 m tall buildin...

    Text Solution

    |

  16. From the top of a 120 m high tower,a man observes two cars on the oppo...

    Text Solution

    |

  17. A vertical tower stands on a horizontal plane and its surmounted by a ...

    Text Solution

    |

  18. At a point A, 20 metres above the level of water in a lake, the angle ...

    Text Solution

    |

  19. A bird is sitting on the top of a 80 m high tree. From a point on the ...

    Text Solution

    |

  20. From the top of a lighthouse. 100 m high, the angle of depression of ...

    Text Solution

    |