Home
Class 11
MATHS
If bara,barb,barc " are unit vectors suc...

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)`=

A

3

B

`4+sqrt3+sqrt2`

C

`sqrt(4+sqrt3+sqrt3)`

D

2

Text Solution

Verified by Experts

The correct Answer is:
C
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

Similar Questions

Explore conceptually related problems

If bara,barb,barc " are three vectors such the " bara=barb+barc,(barb,barc)=pi/2 and absbara=a, absbarb=b, absbarc=c then

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

If bara,barb,barc " are three non zero vectors, and " bara.barb = bara.barc rArr

If bara,barb,barc are three vectors such that absbara =1, absbarb = 2, absbarc =3 and bara+barb+barc = bar0 , then 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 unit vectors, then " abs(bara-barb)^(2)+abs(barb-barc)^(2) +abs(barc-bara)^(2) does not exceed

Suppose bara,barb,barc " be three unit vectors such that " abs(bara-barb)^(2) +abs(barb-barc)^(2)+abs(barc-bara)^(2) " is equal to 3. If " bara,barb,barc are equally inclined to each other, at an angle

If bara, barb, barc are any three vectors such that baraxxbarb=barc, barbxxbarc=bara,barcxxbara=barb then [barabarbbarc] =

AAKASH SERIES-DOT PRODUCT OF TWO VECTORS-EXERCISE - II
  1. If bara,barb " are noncollinear unit vectors, " abs(bara+barb) =sqrt 3...

    Text Solution

    |

  2. If bara,barb,barc " are three vectors such the " bara=barb+barc,(barb,...

    Text Solution

    |

  3. If bara,barb,barc " are unit vectors such that " (bara,barb) = pi/6, (...

    Text Solution

    |

  4. If a,b,c are vector of length 4,4,5 respectively and a,b,c are perpend...

    Text Solution

    |

  5. If 2 out of 3 vectors bara,barb,barc " are unit vectors, " bara+barb+b...

    Text Solution

    |

  6. The vectors bara,barb,barc " satisfy the condition " bara+barb+2barc=b...

    Text Solution

    |

  7. absbara=absbarb=absbarc=1,(bara,barb)=alpha,(barb,barc)=beta(barc,bara...

    Text Solution

    |

  8. If the angle between the vectors bari+bark and bari-barj+abark " is " ...

    Text Solution

    |

  9. If bara = (-4, 2,4) and barb = (sqrt2, - sqrt2, 0), " then " (2bara,(b...

    Text Solution

    |

  10. If bar(AB)=3bari - 4barj-bark, bar(BC) =4bari -barj+3bark are two side...

    Text Solution

    |

  11. If bare(1) = (1,1,1), bare(2) = (1,1,-1) and bara, barb " are two vect...

    Text Solution

    |

  12. If barA = bari+lambdabarj+bark , barB=bari+barj+bark " then for " abs(...

    Text Solution

    |

  13. if bar(a) + bar(b) + bar(c ) = bar(0), |bar(a)| = 3, |bar(b)| = 5, |b...

    Text Solution

    |

  14. If the unit vectors bara and barb " are inclined at an angle " 2theta ...

    Text Solution

    |

  15. Suppose bara,barb,barc " be three unit vectors such that " abs(bara-ba...

    Text Solution

    |

  16. P.T the smaller angle theta between any two diagonals of a cube is giv...

    Text Solution

    |

  17. In a unit cube. Find The angle between a diagonal of a cube and the di...

    Text Solution

    |

  18. If p^(th), q^(th), r^(th) terms of a geometric progression are the pos...

    Text Solution

    |

  19. The position vector of A is pbari+barj. If A is rotated about O throug...

    Text Solution

    |

  20. If bara,barb are two vectors of magnitude 2 and inclined at 60^(@) ," ...

    Text Solution

    |