Home
Class 12
MATHS
If veca= hat i+ hat j+ hat k, vecb=2 ...

If ` veca`= `hat i+ hat j+ hat k`,` vecb=2 hat i- hat j+3 hat k` and ` vecc= hat i-2 hat j+ hat k`find a unit vector parallel to the vector `2 veca- vec b+3 vecc`.

Text Solution

Verified by Experts

Given that,
` veca`= `hat i+ hat j+ hat k`,` vecb=2 hat i- hat j+3 hat k` and ` vecc= hat i-2 hat j+ hat k`
Let, `vecr = 2 veca- vec b+3 vecc`
`= 2(hat i+ hat j+ hat k) - (2 hat i- hat j+3 hat k) +3(hat i-2 hat j+ hat k)`
...
Promotional Banner

Topper's Solved these Questions

  • VECTOR ALGEBRA

    NCERT|Exercise EXERCISE 10.3|18 Videos
  • VECTOR ALGEBRA

    NCERT|Exercise EXERCISE 10.1|5 Videos
  • VECTOR ALGEBRA

    NCERT|Exercise EXERCISE 10.2|19 Videos
  • THREE DIMENSIONAL GEOMETRY

    NCERT|Exercise QUESTION|1 Videos

Similar Questions

Explore conceptually related problems

If vec a= hat i+ hat j+ hat k , vec b=2 hat i- hat j+3 hat k a n d vec c= hat i-2 hat j+ hat k find a unit vector parallel to 2 vec a- vec b+3 vec cdot

vec a=hat i+hat j+hat k,vec b=2hat i-hat j+3hat k and vec c=hat i-2hat j+hat k find a unit vector in a direction parallel to vector (2vec a-vec b+3vec c)

If vec a=hat i+2hat j-3hat k and vec b=2hat i+4hat j+9hat k find a unit vector parallel to vec a+vec b

If vec a=3hat i-2hat j+hat k and vec b=-hat i+hat j+hat k then the unit vector parallel to vec a+vec b, is

If vec(a)=4hat(i)-hat(j)+hat(k) and vec(b)=2hat(i)-2hat(j)+hat(k) , then find a unit vector parallel to the vector vec(a)+vec(b) .

If vec a=hat i+2hat j+hat k,vec b=2hat i+hat j and vec c=3hat i-4hat j-5hat k then find a unit vector perpendicular to both of the vector (vec a-vec b) and (vec c-vec b)

If vec(a)=2hat(i)-hat(j)+2hat(k) and vec(b)=6hat(i)+2hat(j)+3hat(k) , find a unit vector parallel to vec(a)+vec(b) .

For given vectors,vec a=2hat i-hat j+2hat k and vec b=-hat i+hat j-hat k find the unit vector in the direction of the vector quad vec a+vec b

If vec a=hat i+hat j,vec b=hat j+hat k and vec c=hat k+hat i where unit vectors parallel to vec a+vec b-2vec cdots

Let vec a= hat i+ hat j+ hat k , vec b= hat i- hat j+ hat ka n d vec c= hat i- hat j- hat k be three vectors. A vector vec v in the plane of vec aa n d vec b , whose projection on vec c is 1/(sqrt(3)) is given by a. hat i-3 hat j+3 hat k b. -3 hat i-3 hat j+3 hat k c. 3 hat i- hat j+3 hat k d. hat i+3 hat j-3 hat k

NCERT-VECTOR ALGEBRA-MISCELLANEOUS EXERCISE
  1. If theta is the angle between any two vectors veca and vec b, then...

    Text Solution

    |

  2. The two adjacent sides of a parallelogram are 2 hat i-4 hat j+5 hat k...

    Text Solution

    |

  3. Show that the direction cosines of a vector equally inclined to the a...

    Text Solution

    |

  4. Write down a unit vector in XY-plane, making an angle of 30° with the...

    Text Solution

    |

  5. A girl walks 4 km towards west, then she walks 3 km in a direction 30...

    Text Solution

    |

  6. Find the scalar components and magnitude of the vector joining the po...

    Text Solution

    |

  7. Find the value of x for which x( hat i+ hat j+ hat k)is a unit vector...

    Text Solution

    |

  8. Let vec a= hat i+4 hat j+2 hat k , vec b=3 hat i-2 hat j+7 hat kand ...

    Text Solution

    |

  9. The scalar product of the vector hat i+ hat j+ hat kwith a unit vect...

    Text Solution

    |

  10. If theta is the angle between two vectors veca and vecb, then veca...

    Text Solution

    |

  11. Let -> aand -> bbe two unit vectors and is the angle between them...

    Text Solution

    |

  12. If veca , vecb , veccare mutually perpendicular vectors of equal ma...

    Text Solution

    |

  13. Prove that (veca+ vecb)*( veca+ vecb)=|veca|^2+| vecb|^2, if and only ...

    Text Solution

    |

  14. The value of hat i . ( hat jxx hat k)+ hat j . ( hat i times hat k)+...

    Text Solution

    |

  15. State True or False: If vec a= vecb + vec c then |veca |= |vec b| ...

    Text Solution

    |

  16. Find the position vector of a point R which divides the line joining ...

    Text Solution

    |

  17. If veca= hat i+ hat j+ hat k, vecb=2 hat i- hat j+3 hat k and vecc...

    Text Solution

    |

  18. Find a vector of magnitude 5 units, and parallel to the resultant of ...

    Text Solution

    |

  19. Show that the points A(1,2,8) , B(5,0,2) and C(11,3,7)are collinear, ...

    Text Solution

    |