Home
Class 12
MATHS
If vec a= hat i+hat j- hat k, vec b= -ha...

If `vec a= hat i+hat j- hat k, vec b= -hat i+2 hat j+ hat k` and `vec c = - hat i+2 hat j- hatk`, then show that the unit vector perpendicular to `vec a+ vec b` and `vec b+ vec c` is `hat k`.

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

If vec a=3 hat i- hat j-4 hat k , vec b=2 hat i+4 hat j-3 hat k and vec c= hat i+2 hat j- hat k , find |3 vec a-2 hat b+4 hat c|dot

If vec a=x hat i+y hat j+z hat k , vec b=y hat i+z hat j+x hat k and vec c=z hat i+x hat j+y hat k , then vec axx( vec bxx vec c) is

Let vec a= hat i+2 hat j+ hat k , vec b= hat i- hat j+ hat ka n d vec c= hat i+ hat j- hat kdot Then find [vec a vec b vec c]

if vec a = 2 hat i- 3 hat j+hat k and vec b = hat i+2 hat j- 3hat k then vec aXvec b is

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

answer any one question : (ii) let vec a= hat i+4 hat j+ 2hat k , vec b=3 hat i- 2 hat j +7 hat k and vec c= 2 hat i- hat j + 4 hat k . Find a vector vec d which is perpendicular to both the vectors vec a and vec b and vec c . vec d=18

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

Let vec a= hat i+4 hat j+2 hat k , vec b=3 hat i-2 hat j+7 hat ka n d vec c=2 hat i- hat j+4 hat kdot Find a vector vec d which is perpendicular to both vec a and vec b and vec c. vec d=15.

If vec a = -hat i+hat j+2 hat k, vec b= 2 hati- hatj- hat k , and vec c = -2hat i+hat j+3 hatk then find the angle between 2 vec a- vec c and veca+ vecb .

If vec a^'= hat i+ hat j , vec b^'= hat i- hat j+2 hat k and vec c^' = 2 hat i+ hat j- hat k , then the altitude of the parallelepiped formed by the vectors vec a , vec b and vec c having base formed by vec b and vec c is (where vec a ' is reciprocal vector vec a )

UNITED BOOK HOUSE-SET 3-EXERCISE
  1. Events A and B are such that P(A) =(1)/(2), P(B) =(7)/(12) and "P(not ...

    Text Solution

    |

  2. A binomial distribution B(n,p) has the mean 8 and variance 8/3. Find ...

    Text Solution

    |

  3. Show that cos^(-1) ((cosx+cos y)/(1+cos x.cosy))= 2tan^(-1)(tan(x/2).t...

    Text Solution

    |

  4. By row transformation find inverse of the matrix A= [[1,3,2],[-3,-3,-1...

    Text Solution

    |

  5. Show that, A = 1/3[[1,2,2],[2,1,-2],[-2,2,-1]] are orthogonal matrix a...

    Text Solution

    |

  6. Prove that, |[(a+1)(a+2),a+2,1],[(a+2)(a+3),a+3,1],[(a+3)(a+4),a+4,1]|...

    Text Solution

    |

  7. If y = 3e^(2x)+2e^(3x) then show that y2-5y1 +6y=0

    Text Solution

    |

  8. If x = sqrt(a^(sin^(-1)t)) and y= sqrt(a^(cos^(-1)t) show that (dy)/(...

    Text Solution

    |

  9. Evaluate: int(sin^(-1)x)/(x^2 dx

    Text Solution

    |

  10. Evaluate: int (dx)/(x(x^n+1))

    Text Solution

    |

  11. Solve: (dy)/(dx)+y/x = e^x

    Text Solution

    |

  12. Solve: (dy)/(dx) = (2x+3y)/(3x+2y)

    Text Solution

    |

  13. If veca = hati+hatj + hat k, vecb=hati+hatj,vec c= hati and (vec axxve...

    Text Solution

    |

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

    Text Solution

    |

  15. Prove that overset(2)underset(-2)int |1-x^2|dx=4

    Text Solution

    |

  16. Evaluate (with the help of definite integral) underset(n rarr infty)...

    Text Solution

    |

  17. If two dice are rolled 12 times, obtain the mean and varianve of the d...

    Text Solution

    |

  18. Find the equation to the curve passing through (2,2) and having its ...

    Text Solution

    |

  19. Find the area of the parallelogram whose two adjacent sides are 3i+4j ...

    Text Solution

    |

  20. The foot of the perpendicular drawn from the origin 0 to a plane is N(...

    Text Solution

    |