Home
Class 12
MATHS
The cosine of the angle A of the triangl...

The cosine of the angle A of the triangle with vertices A(1, -1, 2), B(6, 11, 2), C(1, 2, 6) is

A

`63/65`

B

`36/65`

C

`16/65`

D

`13/64`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • DIRECTION COSINES AND DIRECTION RATIOS

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 SET -1|4 Videos

  • DIRECTION COSINES AND DIRECTION RATIOS

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 SET -2|3 Videos

  • DIRECTION COSINES AND DIRECTION RATIOS

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 2 SET -2|3 Videos

  • DIFFERENTIATION

    DIPTI PUBLICATION ( AP EAMET)|Exercise SET-4|6 Videos

  • EAMCET - 2016 AP

    DIPTI PUBLICATION ( AP EAMET)|Exercise Questions|80 Videos

Similar Questions

Explore conceptually related problems

If the area of the triangle whose vertices are A(1, 2, 3), B(2, -1, 1) and C(1, 2, -4) is lambda sq unit then (2lambda)/(sqrt(10)) must be

Find the circumcentre of the triangle whose vertices are A(1,0),B(-1,2) and C(3,2)

Find the direction cosines of the sides of the triangle whose vertices are (3,5,-4), (-1,1,2) and (-5,-5,-2).

Find the orthocentre of the triangle formed by the vertices (-2,-1),(6,-1),(2,5)

DIPTI PUBLICATION ( AP EAMET)-DIRECTION COSINES AND DIRECTION RATIOS-EXERCISE 1
  1. If P(2, 3, -6), Q(3, -4, 5) are two points, then anglePOQ is

    Text Solution

    |

  2. If P = (0, 1, 2), Q = (4, -2, 1), O = (0, 0, 0) then anglePOQ=

    Text Solution

    |

  3. The cosine of the angle A of the triangle with vertices A(1, -1, 2), B...

    Text Solution

    |

  4. The angle between the lines passing through the points (8, 2, 0), (4, ...

    Text Solution

    |

  5. The angle between the line passing through the points (3, 1, -2) and (...

    Text Solution

    |

  6. If A(3, 4, 5), B(4, 6, 3), C(-1, 2, 4) and D(1, 0, 5) are such that th...

    Text Solution

    |

  7. If the d.r.'s of two lines are (1, -1, 0) and (1, -2, 1) then the angl...

    Text Solution

    |

  8. If the line joining the points (k, 1, 2), (3, 4, 6) is parallel to the...

    Text Solution

    |

  9. If the line joining the points A(4, 1, 2), B(5, x, 0) is parallel to t...

    Text Solution

    |

  10. If the d.r.'s of two lines are (x, 3, 5) and (2, -1, 2) and if the ang...

    Text Solution

    |

  11. If the line joining the points (2, 3, 4), (0, 1, 2) is perpendicular t...

    Text Solution

    |

  12. If O is the origin and P = (1, -2, 1) and OP bot OQ, then Q =

    Text Solution

    |

  13. If the d.c. 's (l, m, n) of two lines are connected by the relations l...

    Text Solution

    |

  14. If the d.c.'s (l, m, n) of two lines are connected by the relations l+...

    Text Solution

    |

  15. If the d.c.'s (l, m,n) of two lines are connected by the relations 7l^...

    Text Solution

    |

  16. If the d.c.'s (l, m, n) of two lines are connected by the relations l+...

    Text Solution

    |

  17. If the d.c.'s (l, m, n) of two lines are connected by the relations 3l...

    Text Solution

    |

  18. The direction ratios of two lines are given by a+b+c=0, 2ab+2ac-bc=0. ...

    Text Solution

    |

  19. If the d.c.'s (l, m, n) of two lines are connected by the relations l+...

    Text Solution

    |

  20. If the direction ratios of two lines are given by l+m+n=0, mn-2n+lm=0,...

    Text Solution

    |