Home
Class 10
MATHS
The lengths of shadow of a tower standin...

The lengths of shadow of a tower standing on the ground is found to be 64 metres more when the sun's angle of clevation changes from `45^@` to `30^@`. Find the height of the tower. ( Let `sqrt3 = 1* 732`)

Text Solution

Verified by Experts

`87*424` metres ( approx)
Promotional Banner

Topper's Solved these Questions

  • RIGHT CIRCULAR CYLINDER

    CALCUTTA BOOK HOUSE|Exercise Exercise - 2 (Long-answer type questions)|11 Videos
  • SIMILARITY

    CALCUTTA BOOK HOUSE|Exercise Exercise 5.2|27 Videos

Similar Questions

Explore conceptually related problems

The length of shadow of a tower standing on the ground is found to be 60 metres more when the Sun's angle of elevation changes from 45^@ to 30^@ . Find the height of the tower.

The length of shadow of a tower standing on the ground is found to be 60 metres more when the sun's angle of elevation changes from 30^(@) to 45^(@) . Find the height of the tower.

The length of the shadow of a tower standing on level ground is found to be 2x metres longer when the sun's elevation is 30^@ than when it was 45^@ . The height of the tower in metres is____

The length of the shadow of a post becomes 3 metres smaller when the angle of elevation of the sun increases from 45^(@) to 60^(@) . Find the height of the post. [ Let sqrt(3) = 1.732 (appeox.)]

The length of the shadow of a tower is 9 metres when the sun's angle of elevation is 30^(@) . Calculate the height of the tower.

The shadow of a vertical tower on level of ground increased by 10m when the attitude of the sun change from 45^@ to 30^@ . Find the height of the lower.

If the ratio of length of shadow of a tower and height of the tower is sqrt3 : 1 , find the angle of elevation of the Sun.

Answer any One question : The length of the shodow of a post becomes 3 meters smaller when the angle of elevation of the Sun increases from 45^@ to 60^@ . Find the height of the post.

If the ratio between length of shadow of a tower and height of tower is sqrt(3) : 1, then find the angle of elelvation of the sun.

The angle of elevation from the bottom of a tower 20 meter a part is 45^@ . Find the height of the tower.

CALCUTTA BOOK HOUSE-SAMPLE QUESTIONS PAPERS-QUESTION
  1. If tan50^(@) = p/q, then find the value of cos40^@.

    Text Solution

    |

  2. A passenger of an aeroplane observes that Howrah station is at one sid...

    Text Solution

    |

  3. The lengths of shadow of a tower standing on the ground is found to be...

    Text Solution

    |

  4. If 64 water - filled buckets of equal volume are taken out from a cub...

    Text Solution

    |

  5. A right circular cylindrical tank of 9 metre height is filled with wa...

    Text Solution

    |

  6. Calculate how many bullets with lengths of 1 cm radius may be formed b...

    Text Solution

    |

  7. Find the value of(sqrt2+sqrt3)div(sqrt2-sqrt3).

    Text Solution

    |

  8. Find the value of(sqrt5+2)div(sqrt3-1).

    Text Solution

    |

  9. Find the value of 4div(3-sqrt2).

    Text Solution

    |

  10. If a principal becomes dublein 10 years. Then the rate of simple inter...

    Text Solution

    |

  11. The mean - proportional of 16 and 25 is

    Text Solution

    |

  12. O is the circumcentre of Delta ABC and if /OAB = 50^@, then the value ...

    Text Solution

    |

  13. pi/6 redian =

    Text Solution

    |

  14. If the ratio the volumes of two solid sphres is 1 : 8, the ratio of th...

    Text Solution

    |

  15. If the average of the numbers 6, 7, x, 8, y, 14, be 9, then

    Text Solution

    |

  16. The quantity of compound and simple interest of a certain principal at...

    Text Solution

    |

  17. If x prop 1/y and y prop 1/z, then x prop……………

    Text Solution

    |

  18. The greatest chord of a circle is……………

    Text Solution

    |

  19. The number of diagonals of a rectangular parallelopiped is…………..

    Text Solution

    |

  20. Arithmetic mean, median and mode are measures of ……………….. Tendency .

    Text Solution

    |