Home
Class 12
MATHS
Find the direction cosines of the vector...

Find the direction cosines of the vector joining the points `A(1,2,-3)` and `B(-1,-2,1)`, directed from A to B.

Text Solution

Verified by Experts

The correct Answer is:
`(2)/(3)`
Promotional Banner

Topper's Solved these Questions

  • VECTOR ALGEBRA

    BETTER CHOICE PUBLICATION|Exercise SOLVED EXAMPLES SECTION III |21 Videos

  • VECTOR ALGEBRA

    BETTER CHOICE PUBLICATION|Exercise SOLVED EXAMPLES SECTION V|10 Videos

  • VECTOR ALGEBRA

    BETTER CHOICE PUBLICATION|Exercise PREVIOUS YEARS BOARD.S QUESTIONS FOR PRACTICE (MCQ)|46 Videos

  • THREE DIMENSIONAL GEOMETRY

    BETTER CHOICE PUBLICATION|Exercise PREVIOUS YEARS BOARD.S QUESTION FOR PRACTICE |60 Videos

Similar Questions

Explore conceptually related problems

Find the direction cosines of the vectors: hatk

Find the direction cosines of the lines joining the points: (-1,-1,-1) and (2,3,4)

Find the direction cosines of the line jonining the ponts P(4,3,-5) and Q(-2,1,-8).

Find the direction cosines of the vectors: 3hati+4hatk

Write the direction of cosines of the line joining the poidnts (1,0,0) and (0,0,1).

Find the direction cosine of a line joining the points (3,7,-4) and (-2,3,5).

The direction cosines of the line joining the points (- 2, 1, 0) and (3, 2, 1) are,

The direction cosines of the line joining the points (-2, 4, -5) and (1, 2, 3) is :

BETTER CHOICE PUBLICATION-VECTOR ALGEBRA -SOLVED EXAMPLES SECTION II (SHORT ANSWER TYPE QUESTIONS)
  1. Compute the magnitude of the following vectors : veca=hati+hatj+hatk...

    Text Solution

    |

  2. Find the scalar and vector components of the vector with initial point...

    Text Solution

    |

  3. Find the sum of the vectors veca=hati-2hatj+hatk,vecb=-2hati+4hatj+5ha...

    Text Solution

    |

  4. Find the unit vector in the direction of the vector veca=hati+hatj+2ha...

    Text Solution

    |

  5. Find the unit vector in the direction of vector vec(PQ), where P and Q...

    Text Solution

    |

  6. Find a vector in the direction of 5hati-hatj+2hatk, which has magnitud...

    Text Solution

    |

  7. Find the value of x for which x(hati + hatj + hatk) is a unit vector.

    Text Solution

    |

  8. Find the unit vector in the direction of the sum of the vectors veca=2...

    Text Solution

    |

  9. Find the direction cosines of the vector veci+2vecj+3veck ।

    Text Solution

    |

  10. Find the direction cosines of the vector joining the points A(1,2,-3) ...

    Text Solution

    |

  11. Show that the points A(1,2,7), B(2,6,3) ਅਤੇ C(3,10,-1) are collinear.

    Text Solution

    |

  12. Show that the vectors 2hati-3hatj+4hatk and -4hati+6hatj-8hatk are col...

    Text Solution

    |

  13. Find the position vector of the mid point of the vector joining the po...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |