Home
Class 12
MATHS
show that the three lines with direction...

show that the three lines with direction cosines `<12/13,-3/13,-4/13>, <4/13,12/13,3/13>, <3/13,-4/13,12/13>` are mutually perpendicular.

Promotional Banner

Topper's Solved these Questions

  • Three Dimensional Geometry

    MODERN PUBLICATION|Exercise EXERCISE|491 Videos
  • RELATIONS AND FUNCTIONS

    MODERN PUBLICATION|Exercise EXAMPLE|13 Videos
  • UNIT TEST-4

    MODERN PUBLICATION|Exercise EXERCISE|13 Videos

Similar Questions

Explore conceptually related problems

What are the direction cosines ?

Direction cosines of hat i are ‘

Direction cosines of x-axis are

Can be the direction cosines of a line?

Find the direction cosines of x, y and z-axis.

Show that the three lines with direction cosines 12/13, -3/13, -4/13, 4/13, 12/13, 3/13, 3/13, -4/13, 12/13 are mutually perpendicular.

Show that the locus of the point of intersection of mutually perpendicular tangetns to a parabola is its directrix.

If the direction cosine of a line are , then,

MODERN PUBLICATION-Three Dimensional Geometry-EXERCISE
  1. Show that the points (2, 3, 4), (– 1, – 2, 1), (5, 8, 7) are collinear...

    Text Solution

    |

  2. Find the direction cosines of the sides of the triangle whose vertices...

    Text Solution

    |

  3. show that the three lines with direction cosines <12/13,-3/13,-4/13>, ...

    Text Solution

    |

  4. Show that the line through the points (1, – 1, 2), (3, 4, – 2) is perp...

    Text Solution

    |

  5. Show that the line through the points : (4,7,8), (2,3,4) is parallel t...

    Text Solution

    |

  6. Find the equation of the line which passes through the point (1, 2, 3)...

    Text Solution

    |

  7. Find the equation of the line in vector and in cartesian form that pas...

    Text Solution

    |

  8. Find the cartesian equation of the line which passes through the point...

    Text Solution

    |

  9. The cartesian equation of a line is (x-5)/3 = (y+4)/7 = (z-6)/2. Write...

    Text Solution

    |

  10. Find the vector and the cartesian equations of the lines that passes t...

    Text Solution

    |

  11. Find the vector and the cartesian equations of the line that passes th...

    Text Solution

    |

  12. Find the angle between the following pair of lines: vecr = 2hati-5hatj...

    Text Solution

    |

  13. Find the angle between the following pair of lines: vecr = 3hati+hatj-...

    Text Solution

    |

  14. Find the angle between the following pairs of lines : (x-2)/2=(y-1)/5=...

    Text Solution

    |

  15. Find the angle between the lines x/2=y/2=z/1 and [x-5]/4=[y-2]/1=[z-3]...

    Text Solution

    |

  16. Find the value of p so that the lines : l1:(1-x)/3=(7y-14)/(2p)=(z-3)/...

    Text Solution

    |

  17. Show that the lines (x-5)/7 = (y+2)/-5 = z/1 and x/1 = y/2 = z/3 are p...

    Text Solution

    |

  18. Find the shortest distance between the lines vecr = (hati + 2hatj+hatk...

    Text Solution

    |

  19. Find the shortest distance between the lines ((x+1)/7=(y+1)/-6=(z+1)/1...

    Text Solution

    |

  20. Find the shortest distance between the lines whose vector equations ar...

    Text Solution

    |