Home
Class 11
MATHS
The vector bara,barb,barc are equal in l...

The vector `bara,barb,barc` are equal in length and pair wise make equal angles. If `bara=bari+barj, barb=barj+bark " , then " barc`=

A

(1,0,1)

B

(1,1,1)

C

(0,1,1)

D

(1,1,0)

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • DOT PRODUCT OF TWO VECTORS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|57 Videos

  • DOT PRODUCT OF TWO VECTORS

    AAKASH SERIES|Exercise EXERCISE - I|30 Videos

  • DIRECTION COSINES AND RATIOS

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTIONS|8 Videos

  • ERRORS AND APPROXIMATIONS

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTION|15 Videos
AAKASH SERIES-DOT PRODUCT OF TWO VECTORS-EXERCISE - II
  1. A vector bara of magnitude 50 is collinear with the vector 6bari -8bar...

    Text Solution

    |

  2. A=(2,3,5), B(-1,3,2), C=(lambda,5,mu) are the vertices of a triangle. ...

    Text Solution

    |

  3. The vector bara,barb,barc are equal in length and pair wise make equal...

    Text Solution

    |

  4. Find unit vector orthogonal to the vector 3bari + 2barj + 6bark and co...

    Text Solution

    |

  5. If bara=4bari+5barj-bark, barb=bari-4barj+5bark, barc=3bari+barj-bark ...

    Text Solution

    |

  6. If barp=(3,-1,5), barq = (1,2,-3). A vector barr is such that it is ...

    Text Solution

    |

  7. If bara,barb,barc " are unit vectors, then " abs(bara-barb)^(2)+abs(ba...

    Text Solution

    |

  8. If kbara = 3barb+2barc, bara=-2barb+5barc " and if " barb and barc hav...

    Text Solution

    |

  9. bara,barb,barc and bard are the position vectors of four coplanar poin...

    Text Solution

    |

  10. In a Delta ABC, bar(OA)= bara, bar(OB)=barb, bar(OC) = barc. if (bar...

    Text Solution

    |

  11. ABC is an equitateral triangle of side 'a'. Then bar(AB).bar(BC)+bar...

    Text Solution

    |

  12. In Delta ABC , angleABC=90^(@). If P and Q are points of trisection o...

    Text Solution

    |

  13. A parallogram constructed on the vector bar(a) =3barp-barq and bar(b)...

    Text Solution

    |

  14. The length of the projection of the vector (1,-2,-1) on the vector joi...

    Text Solution

    |

  15. The magnitude of the projection of the vector bara=4bari-3barj+2bark o...

    Text Solution

    |

  16. If barb=4bari+3barj and barc be two perpendicular vectors in xy-plane....

    Text Solution

    |

  17. Let bara = 2bari -barj+bark , barb=bari+2barj-bark , barc=bari+barj-2b...

    Text Solution

    |

  18. The triangle ABC is defined by the vertices A =(0,7,10), B = (-1,6,6) ...

    Text Solution

    |

  19. In the Parallelogram ABCD, bar(AC)^(2)-bar(BD)^(2) =

    Text Solution

    |

  20. The bot r bisecting plane of the line segment joining the points (3,1,...

    Text Solution

    |