Home
Class 12
MATHS
If the angles of elevation of the top of...

If the angles of elevation of the top of tower from three collinear points `A`, `B` and `C`, on a line leading to the foot of the tower, are `30^(@)`, `45^(@)` and `60^(@)` respectively, then the ratio , `AB : BC` is

A

`2:3`

B

`sqrt(3) : 1`

C

` sqrt(3) :sqrt( 2) `

D

`1: sqrt(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • JEE MOCK TEST 12

    NTA MOCK TESTS|Exercise MATHEMETIC - SUBJECTIVE NUMERICAL|5 Videos

  • JEE MOCK TEST 14

    NTA MOCK TESTS|Exercise MATHEMATICS|25 Videos

Similar Questions

Explore conceptually related problems

If the angles of elevation of the top of a tower from three collinear points A, B and C, on a line leading to the foot of the tower, are 30^0 , 45^0 and 60^0 respectively, then the ratio, AB : BC, is : (1) sqrt(3):1 (2) sqrt(3):sqrt(2) (3) 1:sqrt(3) (4) 2"":""3

The angle of elevation of the top of two vertialtowers as seen from the middle point of the linejoining the foot of the towers are 60^(@) and 30^(@) respectively.The ratio of the height of the towers is

The angles of elevation of the top of a TV tower from three points A,B and C in a straight line (in thehorizontal plane) through the foot of tower are alpha,2 alpha and 3 alpha respectively.If AB=a, the height of tower is

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.

The angle of elevation of the top of a tower from a point on the ground, which is 30 m away from the foot of the tower, is 30^(@) . Find the height of the tower.

The angle of elevation of the top of a tower from a point on the ground, which is 40 m away from the foot of the tower is 30^(@) . Find the height of the tower.

NTA MOCK TESTS-JEE MOCK TEST 13-MATHEMATICS
  1. The mean of five numbers is 0 and their variance is 2 .If three of tho...

    Text Solution

    |

  2. The first integral term in the expansion of (sqrt3+2^(1/3))^9, is

    Text Solution

    |

  3. If cosalpha+cosbeta=a ,sinalpha+sinbeta=b and alpha-beta=2theta, then ...

    Text Solution

    |

  4. If the image of the point ( 1,-2,3) in the plane 2x + 3y -z =7 is the ...

    Text Solution

    |

  5. The value of int(dx)/(x(x^(n)+1)) is equal to

    Text Solution

    |

  6. If f is a function defined as f ( x) = x^(2)-x+5, f: ((1)/(2) , oo) r...

    Text Solution

    |

  7. Let alpha and beta be two roots of the equation x^(2) + 2x + 2 = 0. Th...

    Text Solution

    |

  8. The value of f (0), such that f( x) =( 1)/(x^(2)) ( 1 -cos( sin x )) c...

    Text Solution

    |

  9. The locus of the centre of the circle which cuts the circle x^2 + y^2 ...

    Text Solution

    |

  10. The parabolas y^(2)=4x and x^(2)=4y divide the square region bounded b...

    Text Solution

    |

  11. The value of lim(xto oo)(2x^(1//2)+3x^(1//3)+4x^(1//4)+....nx^(1//n)...

    Text Solution

    |

  12. If f(x)=x^3+4x^2+ax+5 is a monotonically decreasing function of x in t...

    Text Solution

    |

  13. If the angles of elevation of the top of tower from three collinear po...

    Text Solution

    |

  14. A unit vector in the xy-plane that makes an angle of pi/4 with the vec...

    Text Solution

    |

  15. If x=(1-t^(2))/(1+t^(2)) and y=(2t)/(1+t^(2)), then (dy)/(dx) is equal...

    Text Solution

    |

  16. Let A be a matrix of order 3 xx 3 such that det ( A)= 2 , B = 2A^(-1)...

    Text Solution

    |

  17. Given f(x) where ={(x|x|,"for" xle -1),([x+1]+[1-x],"for"-1lt x lt...

    Text Solution

    |

  18. The line 3x+2y=24 meets the y-axis at A and the x-axis at Bdot The per...

    Text Solution

    |

  19. The minimum number of times a fair coin needs to be tossed, so that th...

    Text Solution

    |

  20. Consider the equation x^(2) + 2x - n = 0 where n in N and n in [5, 100...

    Text Solution

    |