Home
Class 12
MATHS
IF the projection of veca= lambda hati+h...

IF the projection of `veca= lambda hati+hat j+4 hat k` on `vec b= 2hati+6 hat j+3 hatk` is 4 units, then find `lambda`.

Promotional Banner

Topper's Solved these Questions

  • MODEL QUESTION PAPERS SET-07

    UNITED BOOK HOUSE|Exercise Exercise|19 Videos
  • QUESTION PAPER 2015

    UNITED BOOK HOUSE|Exercise EXERCISE|45 Videos

Similar Questions

Explore conceptually related problems

If the projection of vec(a) = lamda hat(i) + hat(j) + 4hat(k) " on " vec(b) = 2hat(i) + 6hat(j) + 3hat(k) is 4 units, then find lamda

Find lambda where projection of vec (a) = lambda hat (i) + hat (j) + 4 hat (k) on vec (b) = 2 hat (i) + 6 hat (i) + 3 hat (k) is 4 unit

find the projection of 3hat i - hat j + 4hat k on 2 hat i + 3 hat j -6 hat k

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

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 =?

If projection of vector lambda hat (i) - hat (j) on vector hat(i) + hat(j) is zero , find lambda

Find the resultant of vectors vec a= hat i- hat j+2 hat k and vec b= hat i+2 hat j-4 hat kdot Find the unit vector in the direction of the resultant vector.

The scalar projection of vec(a) = 2 hat (i) - 3hat(j) + hat (k) on vec (b) = 3 hat(i) - 6 hat (j) - 2 hat (k)

Column I, Column II The possible value of vec a if vec r=( hat i+ hat j)+lambda( hat i+2 hat i- hat k) and vec r=( hat i+2 hat j)+mu(- hat i+ hat j+a hat k) are not consistent, where lambdaa n dmu are scalars, is, p. -4 The angel between vectors vec a=lambda hat i-3 hat j- hat ka n d vec b=2lambda hat i+lambda hat j- hat k is acute, whereas vecrtor vec b makes an obtuse angel with the axes of coordinates. Then lambda may be, q. -2 The possible value of a such that 2 hat i- hat j+ hat k , hat i+2 hat j+(1+a)k a n d3 hat i+a hat j+5 hat k are coplanar is, r. 2 If vec A=2 hat i+lambda hat j+3 hat k , vec B=2 hat i+lambda hat j+ hat k , vec C=3 hat i+ hat ja n d vec A+lambda vec B is perpendicular to vec C then |2lambda| is, s. 3

find the projection of the vector vec a=2hat i+3 hat j+2 hat k , on the vector vec b=hati+2hatj+hat k

UNITED BOOK HOUSE-QUESTION PAPER 2016-EXERCISE
  1. Find the differential equation of all circles which touch the x-axis a...

    Text Solution

    |

  2. Evaluate: underset(x rarr 0)lim(loge(1+alphax)/(e^(2x)-1))

    Text Solution

    |

  3. IF the projection of veca= lambda hati+hat j+4 hat k on vec b= 2hati+6...

    Text Solution

    |

  4. Find the angle between the planes x-y+2z=9 and 2x+y+z=7.

    Text Solution

    |

  5. If P(A//B)= 0.75, P(B//A) = 0.6 and P(A)=0.4 find the value of P(barA/...

    Text Solution

    |

  6. If the number of heads obtained is denoted by X when two unbiased coin...

    Text Solution

    |

  7. A relation R is defined on the set of all natural numbers IN by: (x,y)...

    Text Solution

    |

  8. If sin^(-1)x+sin^(-1)y+sin^(-1)z = pi then prove that xsqrt(1-x^2)+...

    Text Solution

    |

  9. Express the matric A= [[-3,4,1],[2,3,0],[1,4,5]] as the sum of a symme...

    Text Solution

    |

  10. If p,q,r are not in geometric progression and |[1,q/p,alpha+q/p],[1,r/...

    Text Solution

    |

  11. Prove that,abs((a^2+1,ab,ac),(ab,b^2+1,bc),(ca,cb,c^2+1))=1+a^2+b^2+c^...

    Text Solution

    |

  12. If siny = x sin(a+y) then show that (dy)/(dx)= (sina)/(1-2xcos a+x^2).

    Text Solution

    |

  13. pv^a=c (a and c are constants) then show that v^2(d^2p)/(dv^2)=a(a+1)...

    Text Solution

    |

  14. Evaluate: inte^x(x-3)/(x-1)^3 dx

    Text Solution

    |

  15. Evaluate: int sqrt(1+cosecx dx)

    Text Solution

    |

  16. Solve: (1+3e^(y//x))dy+3e^(y//x)(1-y/x)dx=0

    Text Solution

    |

  17. If the area of a circle increases uniformly, then show that the rate o...

    Text Solution

    |

  18. The vectors veca,vecb,vecc are such that veca+vecb+vecc=vec0, If |vec...

    Text Solution

    |

  19. If vec alpha = lambda hat i+hatj+3 hatk,vec beta= -hati+2hatj+hatk,vec...

    Text Solution

    |

  20. Evaluate (with the help of definite integral): underset(n rarr infty)l...

    Text Solution

    |