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

If the anlges 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^@ , 45^@ "and " 60 ^@` respectively , then the ratio AB:BC is

A

`sqrt(3) : 1`

B

`sqrt(3) : sqrt(2)`

C

`1 : sqrt(3)`

D

`2 : 3`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • EQUATIONS

    RESONANCE ENGLISH|Exercise EXERCISE-2 (PART-II: PREVIOUSLY ASKED QUESTION OF RMO) |5 Videos

  • INDEFINITE INTEGRATION

    RESONANCE ENGLISH|Exercise SELF PRACTIC PROBLEMS|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 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 T.V. tower from three points A,B,C in a straight line in the horizontal plane through the foot of the tower are alpha, 2alpha, 3alpha respectively. If AB=a, the height of the tower is

The angle of elevation of the top of a tower from a point on the ground, which is 30m 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 30m 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 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.

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

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

The angle of elevation of the top of a tower from two distinct points s and t from foot are complementary. Prove that the height of the tower is sqrt[st] .

RESONANCE ENGLISH-FUNDAMENTAL OF MATHEMATICS-Exercise
  1. If A=sin^(2)x+cos^(4)x, then for all real x

    Text Solution

    |

  2. Let X""=""{1,""2,""3,""4,""5} . The number of different ordered pairs ...

    Text Solution

    |

  3. In a Delta PQR , if 3 sin P + 4 cos Q = 6 and 4 sin Q + 3 cos P =1, th...

    Text Solution

    |

  4. Let A and B be two sets containing 2 elements and 4 elements, respecti...

    Text Solution

    |

  5. The expression (tan A)/(1-cotA)+(cot A)/(1-tan A) can be written as

    Text Solution

    |

  6. If X={4^(n)-3n-1:ninN}andy={9(n-1):ninN}, then X uu Y equals

    Text Solution

    |

  7. Let fk(x)=1/k(sin^kx+cos^kx)" where "x in R and kge1. " Then "f4(x) -f...

    Text Solution

    |

  8. Let A and B be two sets containing 2 elements and 4 elements, respecti...

    Text Solution

    |

  9. If the anlges of elevation of the top of a tower from three collinear ...

    Text Solution

    |

  10. If 0 le x le 2pi, then the number of real values of x, which satisfy t...

    Text Solution

    |

  11. If 5 (tan ^(2) x - cos ^(2) x ) = 2 cos 2x +9, then the value of cos 4...

    Text Solution

    |

  12. Let a vertical tower A B have its end A on the level ground. Let C be ...

    Text Solution

    |

  13. Let S= {x in R : x ge 0 and 2 |sqrt(x) - 3| + sqrt(x)(sqrt(x) - 6) +...

    Text Solution

    |

  14. If the sum of all the solutions of the equation 8 cosx.(cos(pi/6+x)cos...

    Text Solution

    |

  15. PQR is a triangular park with PQ=PR=200m. A.T.V. tower stands at the m...

    Text Solution

    |

  16. Let S= {x in R : x ge 0 and 2 |sqrt(x) - 3| + sqrt(x)(sqrt(x) - 6) +...

    Text Solution

    |

  17. In a class of 140 students numbered 1 to 140, all even numbered studen...

    Text Solution

    |

  18. The sum of all values of theta in (0,pi/2) satisfying sin^(2)2theta+co...

    Text Solution

    |

  19. the value of cos((pi)/(2^2))cos((pi)/(2^3))cos((pi)/(2^4)) .....cos((...

    Text Solution

    |

  20. If sin^(4) alpha + 4 cos^(4) beta + 2 = 4sqrt(2) sin alpha cos beta, a...

    Text Solution

    |