Home
Class 12
MATHS
A unit vector parallel to the straight l...

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

A

`1/sqrt26(3hati-hatj+4hatk)`

B

`1/sqrt26(hati+3hatj-hatk)`

C

`1/sqrt26(3hati-hatj-4hatk)`

D

`1/sqrt26(3hati+hatj+4hatk)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • THREE DIMENSIONAL GEOMETRY

    NEW JOYTHI PUBLICATION|Exercise Unit Test|8 Videos
  • STRAIGHT LINES

    NEW JOYTHI PUBLICATION|Exercise QUESTIONS FROM COMPETITIVE EXAMS|122 Videos
  • TRIGONOMETRIC FUNCTIONS

    NEW JOYTHI PUBLICATION|Exercise QUESTIONS FROM COMPETITIVE EXAMS|134 Videos

Similar Questions

Explore conceptually related problems

The vector equation of the straight line (1-x)/3 =(y+1)/(-2) =(3-z)/(-1) is

Find the parametric form of vector equation and Cartesian equtions of the straight line passing through the point (-2,3,4) and parallel to the straight line (x-1)/(-4)=(y+3)/(5)=(8-z)/(-6)

Find the vector parametric, vector non-parametric and Cartesian form of the equation of the plane passing through the points (-1, 2, 0), (2, 2, -1) and parallel to the straight line (x-1)/(1)=(2y+1)/(2)=(z+1)/(-1)

Find the non-parametric form of vector equation, and Cartesian eqution of the plane passing through the point (2,3,6) and parallel to the straight lines (x-1)/(2)=(y+1)/(3)=(z-3)/(1)and(x+3)/(2)=(y-3)/(-5)=(z+1)/(-3).

Find the acute angle between the straight lines (x-4)/(2)=(y)/(1)=(z+1)/(-2) and (x-1)/(4)=(y+1)/(-4)=(z-2)/(2) state whether they are parallel or perpendicular.

For what value of (vec(a)) will the straight lines (x+2)/(2)=(y)/(-3)=(z-1)/(4)and(x-3)/(a)=(y-1)/(4)=(z-7)/(a) be perpendicular?

Find the vector and cartesian equation of the plane passing through (2, -1, -3) and parallel to the line (x-5)/(3)=(y+1)/(2)=(z-3)/(-4) and (x+10)/(2)=(y-10)/(3)=(z-2)/(2)

Find the vector equation in parametric form and Cartesian equations of the line passo through (-4, 2,-3) and is parallel to the line (-x-2)/(4)=(y+3)/(-2)=(2z-6)/(3)

Find the vector and cartesian equations of the plane passing through the points A(1, -2, 3) and B(-1,2,-1) and is parallel to the line (x-2)/(2)=(y+1)/(3)=(z-1)/(4) .

NEW JOYTHI PUBLICATION-THREE DIMENSIONAL GEOMETRY-Objective
  1. The vector equation of the straight line (1-x)/3 =(y+1)/(-2) =(3-z)/(-...

    Text Solution

    |

  2. The line (x-x1)/0=(y-y1)/1=(z-z1)/2 is

    Text Solution

    |

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

    Text Solution

    |

  4. The two lines x=ay+b, z=cy+d and x=a'y+b', z=c'y+d will be perpendicul...

    Text Solution

    |

  5. If the vector equation of a line (x-2)/2=(2y-5)/(-3) =z+1 is vecr=2hat...

    Text Solution

    |

  6. If the staight line (x-1)/k=(y-2)/2=(z-3)/3 and (x-2)/3=(y-3)/k =(z-1)...

    Text Solution

    |

  7. The equation of the line joining the points (-3,4,11) and (1,-2,7) is

    Text Solution

    |

  8. The vector equation of the line 6x-3=3y+4=2z-2 is

    Text Solution

    |

  9. The angle between the staight lines (x+1)/2=(y-2)/5=(z+3)/4 and (x-1)/...

    Text Solution

    |

  10. If the lines (x-1)/(-3)=(y-2)/(2k) =(z-3)/2 and (x-1)/(3k) =(y-5)/1=(z...

    Text Solution

    |

  11. A line makes angles alpha,beta,gamma with the coordinates axes . If al...

    Text Solution

    |

  12. The angle between the lines x=1,y=2 and y=-1 ,z=0 is

    Text Solution

    |

  13. The distance between the lines vecr=veca1+tvecb and vecr=veca2+svecb i...

    Text Solution

    |

  14. The vector equation of a plane which is at a distance of 6/sqrt29 from...

    Text Solution

    |

  15. The equation of a plane with intercepts 2,3,and 4 on the x,y and z axe...

    Text Solution

    |

  16. The direction cosines of the normal to the plane 6x-2y-2z=1 are

    Text Solution

    |

  17. The distance of the point (2,1,-1) from the plane x-2y+4z=9 is

    Text Solution

    |

  18. If the plane 2x-y+z=0 is parallel to the line (2x-1)/2=(2-y)/2 =(z+1)/...

    Text Solution

    |

  19. The equation of the plane passing through (2,3,4) and parallel to the ...

    Text Solution

    |

  20. The vector equation of the plane through the point (2,1,-1) and parall...

    Text Solution

    |