Home
Class 12
MATHS
If DeltaABC, if A-=(3,2,6), B-=(1,4,5) ...

If `DeltaABC`, if `A-=(3,2,6), B-=(1,4,5) ` and `C-=(3,5,3)`, then `m angleABC=`

A

`90^(@)`

B

`60^(@)`

C

`45^(@)`

D

`30^(@)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER MHT-CET 2016

    NIKITA PUBLICATION|Exercise MCQs|50 Videos

  • TRIGONOMETRIC FUNCTIONS

    NIKITA PUBLICATION|Exercise MCQs|404 Videos

Similar Questions

Explore conceptually related problems

The vertices of a DeltaABC are A(2, 3, 5), B(-1, 3, 2) and C (3,5,-2). The area of DeltaABC is

If A={1,2,3,6},B={1,3,4,6} and C={3,4,5,6,8} , then find a)B-C b)C-A

If A=[(1,3),(4,2)],B=[(4,1),(-6,3)] and C=[(1,3),(0,-5)] , then find A+B+C ?

Show that the DeltaABC with vertices A ( 0,4, 1) , B ( 2, 3, -1) and C ( 4,5,0) is right angled.

If A {1,2,3,4} , B = {3,4,5,6} and C = { 5,7,8} , then AuuBuuC =…….. .

if A={1,2,3,4,5},B={2,4,6}and C={3,4,6} , then (Acup B) cap C is

In DeltaABC , a=3, b=4 and c=5, evaluate sin2C.

If A={1,2,3},B={2,3,4},C={3,4,5,6}, then prove that A-(B-C)={1,3}

NIKITA PUBLICATION-THREE DIMENSIONAL GEOMETRY -MULTIPLE CHOICE QUESTIONS
  1. If triangleABC is right angled at B , where A(5,6,4), B(4,4,1) and C(8...

    Text Solution

    |

  2. If Delta ABC is right angled at A, where A-=(4, 2, 3), B-=(3, 1, 8) an...

    Text Solution

    |

  3. If DeltaABC, if A-=(3,2,6), B-=(1,4,5) and C-=(3,5,3), then m angle...

    Text Solution

    |

  4. If A (0, 7, 10), B(-1, 6, 6) and C(-4, 9, 6) are the vertices of Delta...

    Text Solution

    |

  5. If bar a, barb, barc are three mutually perpendicular vectors of equal...

    Text Solution

    |

  6. The angle between the lines whose direction cosines satisfy the equ...

    Text Solution

    |

  7. Find the direction cosines of the two lines which are connected by ...

    Text Solution

    |

  8. Find the acute angle between the two straight lines whose direction co...

    Text Solution

    |

  9. The direction cosines l, m and n of two lines are connected by the rel...

    Text Solution

    |

  10. If the direction ratio of two lines are given by 3lm-4ln+mn=0 and l+2m...

    Text Solution

    |

  11. The angle between the lines whose direction cosines l, m, n satisfy t...

    Text Solution

    |

  12. Find the angle between the lines whose direction cosines are given by ...

    Text Solution

    |

  13. Direction ratios of two lines satisfy the relations 2a-b+2c=0 and ab+...

    Text Solution

    |

  14. IF the direction ratios of two vectors are connected by the relations ...

    Text Solution

    |

  15. The angle between diagonal of a cube and diagonal of a face of the c...

    Text Solution

    |

  16. Let l(1),m(1),n(1),l(2),m(2),n(2) and l(3),m(3), n(3) are direction co...

    Text Solution

    |

  17. The direction cosines of a line equally inclined to three mutually per...

    Text Solution

    |

  18. Find the direction cosines of the two lines which are connected by ...

    Text Solution

    |

  19. If l(1), m(1), n(1) and l(2), m(2), n(2) are the direction cosines of ...

    Text Solution

    |

  20. The direction ratios of vector perpendicular to the two lines whose di...

    Text Solution

    |