Home
Class 12
MATHS
The direction cosines of the line joinin...

The direction cosines of the line joining the points (-2, 4, -5) and (1, 2, 3) is :

A

`larr2/sqrt77,8/sqrt77,3/sqrt77gt`

B

`larr3,2,8gt`

C

`lt3/sqrt77,-2/sqrt77,8/sqrt77gt`

D

`lt3,-2,8gt`

Text Solution

Verified by Experts

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

The direction cosines of the line joining the points (-2,1,-8) and (4,3,-5) is :

The direction cosines of the line joining the points (- 2, 1, 0) and (3, 2, 1) are,

The direction cosines of the line joining the points (-1, -1, -1) and (2, 3, 4) are,

Find the direction cosines of the vector joining the points A(1, 2, 3) and B(1, 2, 1) , directed from A to B.

Find the direction cosines of the lines joining the points: (-1,-1,-1) and (2,3,4)

Find the direction cosines of the line passing through the points (-2,4,-5), and (1,2,3).

Find the direction cosine of a line joining the points (3,7,-4) and (-2,3,5).

Fill in the blanks : The direction cosines of the line joining points (1, 0, 0) and (0, 1, 1) are ……… .

Find the direction cosines of the line jonining the ponts P(4,3,-5) and Q(-2,1,-8).

MODERN PUBLICATION-Three Dimensional Geometry-EXERCISE
  1. If a vector makes angles alpha, beta, gamma with x, y and z axes respe...

    Text Solution

    |

  2. If a line makes angles of 90^@,60^@ and 30^@ with the positive x, y an...

    Text Solution

    |

  3. The direction cosines of the line joining the points (-2, 4, -5) and (...

    Text Solution

    |

  4. Distance between plane defined by 3x + 4y + 5 = 0 and the point (5, 0,...

    Text Solution

    |

  5. Vector equation of the line (x+1)/(2)=(y-4)/(4)=(z+6)/(3)

    Text Solution

    |

  6. The value of lambda for which the plane vecr*(2hati-2hatj+4hatk)=5 is ...

    Text Solution

    |

  7. Direction casines of z-axis are

    Text Solution

    |

  8. If a line has direction ratios <2,-1,-2>, then what are its direction ...

    Text Solution

    |

  9. A line makes angles 45^@ and 60^@ with the positive direction of the a...

    Text Solution

    |

  10. Equation of line passing through the point (2,3,1) and parallel to the...

    Text Solution

    |

  11. If the direction cosines of a vector of magnitude 3 are <2/3, -a/3, 2/...

    Text Solution

    |

  12. Equation of line passing through the point (2,3,1) and parallel to the...

    Text Solution

    |

  13. A unit vector parallel to the straight line: (x-2)/3=(3+y)/-1=(z-2)/-4...

    Text Solution

    |

  14. The angle between a normal to the plane : 2x-y+2z-1=0 and the z axis i...

    Text Solution

    |

  15. Find the coordinates of the Foot of the perpendicular drawn from the ...

    Text Solution

    |

  16. The distance between the x axis and the point (3,12,5) is :

    Text Solution

    |

  17. The shortest distance of the point (a,b,c) from the x-axis is

    Text Solution

    |

  18. Equation of the plane perpendicular to the line x/1=y/2=z/3 and passin...

    Text Solution

    |

  19. The line (x-2)/3=(y-3)/4=(z-4)/5 is parallel to the plane:

    Text Solution

    |

  20. Prove that the angle between any two diagonals of a cube is cos^-1frac...

    Text Solution

    |