Home
Class 10
MATHS
An electrician wants to repair an electr...

An electrician wants to repair an electric connection on a pole of height 9 m. He needs to reach 2 m below the top of the pole to do repairing work. The distance between foot of the ladder and foot of the pole when the climbs it at an angle `60^@` with the ground is........

A

7m

B

`7/sqrt3`m

C

14 m

D

`14/sqrt3`m

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRY

    VGS PUBLICATION-BRILLIANT|Exercise EXERCISE|435 Videos

Similar Questions

Explore conceptually related problems

An electrician wants to repair an electric connection on a pole of height 9m. He needs to reach 1.8 m below the top of the pole to do repair work. What should be the length of the ladder which he should use, when he climbs it at an angle of 60^(@) with the ground? What will be the distance between foot of the ladder and foot of the pole?

Two poles of heights 6m and 11 m stand on a plane ground. IF the distance between the feet of the poles is 12m, find the distance between their tops.

A player sitting on the top of a tower of height 40m observes the angle of depression of a ball lying on the ground is 60^(@) . The distance between the foot of the tower and ball is…………m.

A ladder of 5 m length is laid against a wall. The distance between the foot of the wall and the ladder is 2.7 m find the height at which the ladder touches the wall.

Two poles of heights 23m and 30m stand on the plane ground. If the distance between their feet is 24m, find the distance between their tops.

A ladder of 3.9 m length is laid against a wall. The distance between the foot of the wall and the ladder is 1.5 m. Find the height at which the ladder touches the wall.

A Ladder of 4.6 m Length is laid against a wall. The distance between the foot of a wall and the ladder is 2.3 m find the height at which the ladder touches the wall.

A boy observed the top of an electrical pole to be at angle of elevation of 60^(@) when the observation point is 8m away from the foot of the pole then the height of the pole is……….m.

A ladder of 20 mt long reaches a point 20 mt below the top of a flag staff. If the angle of elevation of the top of the flag staff at the foot of the ladder is 60 ^(@) then the height of the flag staff is

From the top of a 10 m height tree the angle of depression of a point on the ground is 30^@ then the distance of the point from the foot of the tree is

VGS PUBLICATION-BRILLIANT-TRIGONOMETRY (MULTIPLE CHOICE QUESTION)-TRIGONOMETRY (MULTIPLE CHOICE QUESTION)
  1. cos100^@.cos40^@+sin100^@.sin40^@=……..

    Text Solution

    |

  2. IF tan theta+cot theta=x, sec theta-cos theta=y then eliminate 'theta'...

    Text Solution

    |

  3. The angles of a Quadrilateral are in A.P. Greatest angle is double the...

    Text Solution

    |

  4. IF sin(A-B)=3/5 and sin(A+B)=4/5 then find sin2A=……..

    Text Solution

    |

  5. IF 5sinx+12cosx=7 then find 5cosx-12sinx=……..

    Text Solution

    |

  6. If sin alpha + "cosec" alpha = 2, find value of sin^(n) alpha + "cosec...

    Text Solution

    |

  7. Find the condition that sec^2theta=(4xy)/((x+y)^2) is true.

    Text Solution

    |

  8. Solve: tan^2theta+sec2theta=1,0^@lethetale90^@

    Text Solution

    |

  9. In any Delta^(l e) ABC then cot""A/2+cot"+"B/2""cot""C/2=..........

    Text Solution

    |

  10. Given alpha+beta+gamma=pi then sin^2alpha+sin^2beta-sin^2gamma is equa...

    Text Solution

    |

  11. IF alpha+beta=pi/2 and gamma+beta=alpha then find tan alpha.

    Text Solution

    |

  12. Find the value of the expression sqrt3 cosec 20^@-sec20^@=…….

    Text Solution

    |

  13. IF x^2+y^2=1 and P=(3x-4x^3)^2+(3y-4y^3)^2 then find 'P'.

    Text Solution

    |

  14. IF tan^2 theta=2 tan^2 phi +1 then find the value of cos 2 theta+sin^2...

    Text Solution

    |

  15. IF y=(tan(pi/4+theta)+tan(pi/4-theta))/(tan(pi/4+theta)-tan(pi/4-theta...

    Text Solution

    |

  16. From a ship mast-head 150m.high, the angle of depression of a boat is ...

    Text Solution

    |

  17. From a point 30 mts from the foot of a tower, the angle of elevation o...

    Text Solution

    |

  18. An electrician wants to repair an electric connection on a pole of hei...

    Text Solution

    |

  19. A T.V. tower stands vertically on the side of a road. From a point on ...

    Text Solution

    |

  20. From the top of a building, the angle of elevation of the top of a cel...

    Text Solution

    |