Home
Class 11
MATHS
If (vec(a), vec(b))= pi, then |4vec(a) x...

If `(vec(a), vec(b))= pi`, then `|4vec(a) xx 5vec(b) + vec(b) xx vec(a)|`=

A

0

B

`19 |vec(a)| |vec(b)|`

C

`|vec(a) | |vec(b)|`

D

`2|vec(a)| |vec(b)|`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • VECTOR (CROSS) PRODUCT OF TWO VECTORS

    AAKASH SERIES|Exercise Exercise-II|47 Videos

  • VECTOR (CROSS) PRODUCT OF TWO VECTORS

    AAKASH SERIES|Exercise Practice Exercise|34 Videos

  • VECTOR (CROSS) PRODUCT OF TWO VECTORS

    AAKASH SERIES|Exercise Additional Exercise|12 Videos

  • TRIGONOMETRIC RATIOS

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE (LEVEL - II) (PRACTICE SHEET (ADVANCED) SIGNLE ANSWER TYPE QUESTIONS)|23 Videos

Similar Questions

Explore conceptually related problems

(vec(a) xx vec(b), vec(b) xx vec(a)) =

If vec(a) + 2vec(b) + 4 vec(c )= vec(0) , then vec(a) xx vec(b) + vec(b) xx vec(c )+ vec(c )xx vec(a)=

If |vec(a)|=1, |vec(b)|=2 and (vec(a), vec(b))= 120^(@) , then {(vec(a) + 3 vec(b)) xx (3vec(a) - vec(b))}^(2)=

If |vec(a)| = |vec(b)|=2 , then (vec(a) xx vec(b))^(2) + (vec(a).vec(b))^(2)=

If vec(a) + 2vec(b) + 4vec(c ) = vec(0) then show that vec(a) xx vec(b) =4 (vec(b) xx vec(c ))= 2(vec(c ) xx vec(a))

If vec(a)= vec(i) + vec(j) + vec(k), vec(b)= 2vec(i)-3vec(j) + vec(k) , then (vec(a) xx vec(b))/(|vec(a) xx vec(b)|) + (vec(b) xx vec(a))/(|vec(b) xx vec(a)|) =

If vec(a) + vec(b) + vec(c )= vec(0) and |vec(a) xx vec(b)|=3 , then |vec(b) xx vec(c )| =

vec(a)= 2vec(i) + vec(j) -vec(k), vec(b)= -vec(i) + 2vec(j)- 4vec(k) and vec(c )= vec(i) + vec(j) + vec(k) , then find (vec(a) xx vec(b)).(vec(b) xx vec(c )) .

If |vec(a)|=2, |vec(b)|=4 , then (|vec(a) xx vec(b)|^(2))/(1-cos^(2)(vec(a), vec(b)))=

If vec(a) xx vec(b)= vec(c ) xx vec(d), vec(a) xx vec(c )= vec(b) xx vec(d) , then

AAKASH SERIES-VECTOR (CROSS) PRODUCT OF TWO VECTORS-Exercise-I
  1. If vec(a)= 2vec(i)-vec(j) +vec(k), vec(b)= 3vec(i) + 4vec(j) -vec(k), ...

    Text Solution

    |

  2. If vec(a)= 2vec(i) -vec(j) + 3vec(k), vec(b)= p vec(i) + vec(j) + q ve...

    Text Solution

    |

  3. If vec(a)= 3 vec(i)- vec(j)-2vec(k), vec(b)= 2vec(i) + 3vec(j) + vec(k...

    Text Solution

    |

  4. If (vec(a), vec(b))= pi, then |4vec(a) xx 5vec(b) + vec(b) xx vec(a)|=

    Text Solution

    |

  5. If |vec(a)|=2, |vec(b)|=4, then (|vec(a) xx vec(b)|^(2))/(1-cos^(2)(ve...

    Text Solution

    |

  6. If theta is th angle between the vector 2i - 2j + 4k and 3i + j + 2k, ...

    Text Solution

    |

  7. If a and b are unit vectors and a xx b = 1, then the angle between a a...

    Text Solution

    |

  8. If vec(a), vec(b) are collinear, then which of the following is false?

    Text Solution

    |

  9. If |vec(a) xx vec(b)|=6, |vec(a)|=6, (vec(a), vec(b))= (pi)/(3), then ...

    Text Solution

    |

  10. A unit vector perpendicular to 2vec(i) + 3vec(j) + 4vec(k) and 3vec(j)...

    Text Solution

    |

  11. If vec(a)= vec(i) + vec(j) + vec(k), vec(b)= -vec(i) + 2vec(j) + vec(k...

    Text Solution

    |

  12. Any vector which is perpendicular to each of the vectors 2vec(i) + vec...

    Text Solution

    |

  13. The area of the triangle formed by thepoints whose position vectors ar...

    Text Solution

    |

  14. The vector area of the triangle formed by the points vec(i) -vec(j) + ...

    Text Solution

    |

  15. If the area of the parallelogram whose adjacent sides are 3 vec(i) - 4...

    Text Solution

    |

  16. The area of the parallelogram whose adjacent sides are 3vec(i) + 2vec(...

    Text Solution

    |

  17. The vector area of the parallelogram whose diagonals are vec(i) + 2vec...

    Text Solution

    |

  18. Two diagonals of a parallelogram are vec(i) + 2vec(j) + 3vec(k) and -2...

    Text Solution

    |

  19. a, b, c are three vectors such that |a| = 1, |b| = 2, |c| = 3 and b, c...

    Text Solution

    |

  20. If a,b,c are unit vectors satisfying the relation a + b+sqrt(3) c = 0,...

    Text Solution

    |