Home
Class 12
MATHS
Find vec a* vec b if vec a=3 hat i+4 hat...

Find `vec a* vec b` if `vec a=3 hat i+4 hat j-2 hat k` and `vec b=-2 hat i+ 2 hat j + hat k`

Promotional Banner

Topper's Solved these Questions

  • VECTORS

    PRADEEP PUBLICATION|Exercise EXERCISE|438 Videos
  • THREE DIMENSIONAL GEOMETRY

    PRADEEP PUBLICATION|Exercise EXERCISE|373 Videos

Similar Questions

Explore conceptually related problems

Find |vec a xx vec b| , if vec a = 2hat i-5 hat j+3 hat k and vec b = hat i-2 hat j +2 hat k .

Find a unit vector perpendicular to each of the vectors vec a+vec b and vec a- vec b , where vec a =3 hat i+2 hat j+2 hat k and vec b= hat i + 2 hat j - 2hat k

Find | vec axx vec b| , if vec a= hat i-7 hat j+7 hat k and vec b=3 hat i-2 hat j+2 hat kdot

Find vec a xx vec b , if vec a = - hat i + 3 hat k and vec b = hat i + 3 hat j - 2 hat k .

Find [vec a, vec b, vec c] if vec a= hati -2 hat j+ 3 hat k, vec b=2 hat i-3 hat j + hat k and vec c=3 hat i+ hat j -2 hat k .

Find vec a* vec b if vec a= 2 hat i+ hat k and vec b= hat i+hat j+hat k

Find vec a +vec b if vec a = hat i - hat j and vec b =2 hat i

If vec a = hat i + hat j+ 2hat k and vec b =2 hat i+ hat j - 2 hat k , find vec a + vec b .

Vectors vec a , vec b , vec c and vec d are given by vec a= hat i+ hat j+ hat k , vec b= 2 hat i+ 3 hat j , vec c= 3 hat i+ 5 hat j- 2 hat k and vec d= - hat j+ hat k . Show that the vectors vec b- vec a and vec d- vec c are parallel and find the ratio of their lengths.

Define the vector product of two vectors vec a and vec b . If vec a = 2 hat i- hat j+ hat k and vec c= 2 hat i+ 3 hat j , then find (vec a+ vec b)* vec c and vec a* (vec b+ vec c) .

PRADEEP PUBLICATION-VECTORS-EXERCISE
  1. If vec a* vec a =0 and vec a* vec b =0, then what can be concluded abo...

    Text Solution

    |

  2. If vec (PQ) =3 hat i+3 hat j+6 hat k and Q is the point (4, 5, 6), fin...

    Text Solution

    |

  3. Find vec a* vec b if vec a=3 hat i+4 hat j-2 hat k and vec b=-2 hat i+...

    Text Solution

    |

  4. If (vec a+ vec b)*(vec a- vec b)=0 and |vec a|=5, find |vec b|.

    Text Solution

    |

  5. If (vec a)^2 =(vec b)^2, is it necessary that vec a= vec b ?

    Text Solution

    |

  6. What is the angle between two unlike parallel vectors ?

    Text Solution

    |

  7. If vectors vec a and vec b, are such that |vec a| =3,|vec b| =2/3 and ...

    Text Solution

    |

  8. Find the sum of vectors vec a= 2 hati -hat j +hat k and vec b = 2 hat ...

    Text Solution

    |

  9. If vec a = hat i + hat j+ 2hat k and vec b =2 hat i+ hat j - 2 hat k, ...

    Text Solution

    |

  10. If vec a = hat i + hat j+ 2hat k and vec b =2 hat i+ hat j - 2 hat k, ...

    Text Solution

    |

  11. Find a unit vector in the direction of vec(PQ) . where P and Q have co...

    Text Solution

    |

  12. Find the angle between the vectors 2 hat i -hat j+ hat k and 3 hat i +...

    Text Solution

    |

  13. Find a vector of magnitude 11 in the direction opposite to that of vec...

    Text Solution

    |

  14. Find the position vector of the point R which divides the line (segme...

    Text Solution

    |

  15. if vec a = 2 hat i - hat j+ hat k, vec b =hat i+ hat j - 2 hat k and ...

    Text Solution

    |

  16. Find the magnitude of a vector, whose components are 3, 4 and -12

    Text Solution

    |

  17. Consider the points P (- 1, 0 2) and Q (3, -2 1), Write down vector v...

    Text Solution

    |

  18. If vec a = 2hat i - hat j+ 3hat k and vec b =4 hat i+ hat j - 3 hat k,...

    Text Solution

    |

  19. For any two vectors vec a and vec b, prove that (vec a* vec b)^ 2 le |...

    Text Solution

    |

  20. If for a vector vec a, vec a*hat i = vec a*hat j= vec a*hat k=0, then ...

    Text Solution

    |