Home
Class 11
MATHS
The upper (3)/(4) the portion of a ver...

The upper `(3)/(4) ` the portion of a vertical pole subtends an angle ` Tan ^(-1) ""(3)/(5) ` at a point in the horizontal plane through its foot and at a distance 40m from the foot. Given that the vertical pole is at a height less than 100 m from the ground. then its height is

A

`40 `

B

` 80 `

C

` 60 `

D

` 20 `

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE EXERCISE|132 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise LECTURE SHEET EXERCISE - I ( Straight Objective Type Questions ) |58 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - 1|98 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 upper 3//4^(th) portion of a vertical pole subtends an angle "Tan"^(-1)(3//5) at a point in the horizontal plane through its foot and at a distance 40 m from the foot . Given that the vertical pole is at a height less than 100m from the gound ,find its height .

The upper 3/4th portion of a vertical pole subtends an angle tan^(-1)(3/5) at the point in the horizont plane through its foot. The tangent of the angle subtended by the pole at the same points is

A flag staff of the height (a-b) stands on the top of a tower subtends the same angle at the point on the horizontal plalne through the foot of the tower which are at distant a and b from the tower. The height of the tower is

A vertical pole subtends an angle Tan ^(-1) (( 1)/(2)) at a point P on the ground. On the ground .If the angles subtends by the upper half and the lower half of the pole at P are respectively alpha and beta then ( tan alpha, tan beta)

A vertical pole subtends an angle Tan^-1(1/2) at a point P on the ground. IF the angles subtended by the upper half and the lower half of the pole at P are respectively alpha and beta , then (tan alpha , tan beta) =

A flag staff on the top of the tower 80 mt of height subtends an angle Tan^-1 (1//9) at a point on the ground 100 mt from the foot of the tower. The height of the flag staff is

A flag staff on top of the tower 30mt of height subtends an angle of - tan^(-1)((1)/(3)) at a point on the ground 50mt from the foot of the tower. The height of the flag staff is

AAKASH SERIES-PROPERTIES OF TRIANGLES-EXERCISE - II
  1. If in a Delta ABC , r1 =2r2=3r3, then b: c=

    Text Solution

    |

  2. If cot ""(A)/(2) = 30 , Cot "" (B)/(2) = 50 , Cot "" ( C)/(2) = 70...

    Text Solution

    |

  3. A tower, of x metres high, has a flagstaff at its top. The tower and t...

    Text Solution

    |

  4. A ladder of 20 mt long reaches a point 20 mt below the top of a flag s...

    Text Solution

    |

  5. The angle of elevation of the toop point P of the vertical tower PQ of...

    Text Solution

    |

  6. A lamp post is sittuated at the middle point M of the side AC of a tri...

    Text Solution

    |

  7. A flag staff stands vertically on a pillar. The height of the flag sta...

    Text Solution

    |

  8. A tower subtends angles alpha, 2alpha, 3alpha at A,B and C all lyin...

    Text Solution

    |

  9. The upper (3)/(4) the portion of a vertical pole subtends an angle...

    Text Solution

    |

  10. A vertical pole subtends an angle Tan ^(-1) (( 1)/(2)) at a point ...

    Text Solution

    |

  11. The sides of a right angled trinagles are in A.P., then they are in th...

    Text Solution

    |

  12. The angle of elevation of the top of the tower is 45^(@) on walking up...

    Text Solution

    |

  13. The angle of elevation of a tower from two point which are distance h...

    Text Solution

    |

  14. The upper 3//4 of a ship's mast subtends at a point on the deck whic...

    Text Solution

    |

  15. AB is vertical pole with B at ground level and A at the top. A man fi...

    Text Solution

    |

  16. The angle of elevation of the top of the tower is 45^(@) on walking up...

    Text Solution

    |

  17. The angle of a triangle ABC are in an arithmetic progression . The lar...

    Text Solution

    |

  18. In Delta ABC , if x=tan((B-C)/(2))tan.(A)/(2),y=tan((C-A)/(2))tan.(B)/...

    Text Solution

    |

  19. In Delta ABC, if the sides a,b,c are in geometric progression and the ...

    Text Solution

    |

  20. In a Delta ABC if angle A=90^@, then cos^(-1)(( R)/(r2 +r3)) is equal

    Text Solution

    |