Home
Class 11
MATHS
If bara is a unit vector and barx is an...

If `bara` is a unit vector and `barx` is any vector such that `(barx-bara).(barx+bara)= 15 " then find " absbarx`.

Text Solution

Verified by Experts

The correct Answer is:
4
Promotional Banner

Topper's Solved these Questions

  • DOT PRODUCT OF TWO VECTORS

    AAKASH SERIES|Exercise EXERCISE - I|30 Videos

  • DOT PRODUCT OF TWO VECTORS

    AAKASH SERIES|Exercise EXERCISE - II|71 Videos

  • DOT PRODUCT OF TWO VECTORS

    AAKASH SERIES|Exercise EXERCISE-2.1 (LONG ANSWER QUESTIONS)|5 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

Similar Questions

Explore conceptually related problems

If bara is a unit vector then baraxx{baraxx(baraxxbarb)}=

If bara and barb are non-zero vectors such that abs(bara+barb)^(2) = absbara^(2) +absbarb^(2) , then find the angle between bara and barb

If bara, barb are two unit perpendicular vectors then baraxx (baraxx barb) =

If bara,barb,barc " are unit vectors such that " bara+barb+barc=bar0, " then find the least value of " bara.barb+barb.barc+barc.bara .

If bara,barb,barc are any three vectors such that (bara+ barb) . barc = (bara - barb) . barc = 0 then (baraxx barb)xxbarc =

If bara,barb,barc are non-coplanar unit vectors such that baraxx(barbxxbarc)=(barbxxbarc)/(sqrt2) then (bara,barb) =

If bara,barb,barc " are unit vectors such that " (bara,barb) = pi/6, (barb,barc)= pi/3 and (barc,bara)=pi/4 ," then " abs(bara+barb+barc) =

bara,barb,barc are mutually perpendicular unit vectors and bard is a unit vector equally inclined to each of bara,barb and barc " at an angle of " 60^(@). " Find the value of " abs(bara+barb+barc+bard)^(2) .

AAKASH SERIES-DOT PRODUCT OF TWO VECTORS-ADDITIONAL EXERCISE
  1. If bara is a unit vector and barx is any vector such that (barx-bara)...

    Text Solution

    |

  2. If bare(1),bare(2) and bare(3) are mutually perpendicular unit vectors...

    Text Solution

    |

  3. If bara,barb,barc " are unit vectors such that " bara+barb+barc=bar0, ...

    Text Solution

    |

  4. If A = (1,-1,0), B=(1,2,1), C=(2,3,0) and D=(0,1,t). Be four points. ...

    Text Solution

    |

  5. bara,barb,barc are mutually perpendicular unit vectors and bard is a u...

    Text Solution

    |

  6. In the coordinate plane, A(1,y(0)) " is a point on the curve " y=2sq...

    Text Solution

    |

  7. If the vectros (cosx)bari +(sinx)barj and xbari+(sinx)barj are colline...

    Text Solution

    |

  8. Find the acute angle between the diagonals of a parallelogram whose ad...

    Text Solution

    |

  9. If bara = 3bari-4barj-bark, barb = 2bari + 3barj -6bark are diagonals...

    Text Solution

    |

  10. If the planes barr.(bari+barj-3bark) = 7 and barr.(bari -tbarj+bark) =...

    Text Solution

    |

  11. If bara,barb" and "bara-barb are unit vectors, then what is the angle ...

    Text Solution

    |

  12. In DeltaABC, " if " BC = a, CA = b and AB = C, " then what is the valu...

    Text Solution

    |

  13. If absbara = 3,absbarb =2 and theta " is angle between " bara and barb...

    Text Solution

    |

  14. If bara = xbari + ybari + zbark, then what are the value of x, y and z...

    Text Solution

    |

  15. If bara,barb,barc " are unit vectors, then find least value of " 2(ba...

    Text Solution

    |

  16. If bara " is perpendicular to " bari,barj & bark, " then find " bara.

    Text Solution

    |

  17. If bar(AD),bar(BE) and bar(CF) " are the medians of " DeltaABC, then f...

    Text Solution

    |

  18. If bara and barb are any two non-zero vectors, then find the angle bet...

    Text Solution

    |

  19. If bara and barb are non-zero vectors such that abs(bara+barb)^(2) = a...

    Text Solution

    |

  20. If bare(1),bare(2) and bare(3) are non-coplanar unit vectors and alp...

    Text Solution

    |