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If ABCD is a parallelogram, vec A B=2 h...

If ABCD is a parallelogram, ` vec A B=2 hat i+4 hat j-5 hat k` and ` vec A D= hat i+2 hat j+3 hat k` , then the unit vector in the direction of `B D` is `1/(sqrt(69))( hat i+2 hat j-8 hat k)` (b) `1/(69)( hat i+2 hat j-8 hat k)` `1/(sqrt(69))(- hat i-2 hat j+8 hat k)` (d) `1/(69)(- hat i-2 hat j+8 hat k)`

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If vec A = hat i + 3 hat j + 2 hat K and vec B = 3 hat i + hat j + 2 hat k , then find the vector product vec A xx vec B .

Vectors vec A=hat i+hat j-2hat k and vec B=3hat i+3hat j-6hat k are

The sides of a parallelogram are 2hat i+4hat j-5hat k and hat i+2hat j+3hat k .The unit vector parallel to one of the diagonals is a.(1)/(7)(3hat i+6hat j-2hat k) b.(1)/(7)(3hat i-6hat j-2hat k) c.(1)/(sqrt(69))(hat i+6hat j+8hat k) d.(1)/(sqrt(69))(-hat i-2hat j+8hat k)

For given vectors,vec a=2hat i-hat j+2hat k and vec b=-hat i+hat j-hat k find the unit vector in the direction of the vector quad vec a+vec b

Let ABCD be the parallelogram whose sides AB and AD are represented by the vectors 2 hat i +4 hat j-5 hat k and hat i+2 hat j+3 hat k.Then if vec a is a unit vector parallel to AC then = (a) 1/3(3 hat i-6 hat j-2 hat k) (b) 1/3(3 hat i +6 hat j+2 hat k) (c) 1/7(3 hat i +6 hat j+2 hat k) (d) 1/7(3 hat i +6 hat j-2 hat k)

If vec(a) = hat(i) + 2 hat(j) + 3 hat(k) and vec(b) = 2 hat(i) + 3 hat(j) + hat(k) , find a unit vector in the direction of ( 2 vec(a) + vec(b)) .

If vec P=hat i+hat j+2hat k and vec Q=3hat i-2hat j+hat k ,the unit vector perpendicular to both bar(P) and bar(Q) is (A) (hat i+hat j-hat k)/(sqrt(3)) (B) 5(hat i+hat j-hat k) (C) (1)/(sqrt(3))(hat i-hat j+hat k) (D) (1)/(25)(hat i+hat j-hat k)

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 A vector in the plane of vec a and vec b whose projection of c is 1//sqrt(3) is a. 4 hat i- hat j+4 hat k b. 3 hat i+ hat j+3 hat k c. 2 hat i+ hat j+2 hat k d. 4 hat i+ hat j-4 hat k

If vec a=hat i+hat j+hat k&vec b=hat i-2hat j+hat i, then the vector vec c such that vec a*vec c=2&vec axvec c=vec b is (1)/(3)(hat i-2hat j+hat k) (b) (1)/(3)(-hat i+2hat j+5hat k)(1)/(3)(hat i+2hat j-5hat k)( d) (1)/(2)(-hat i+2hat j-5hat k)

Find the unit vector in the direction of vec a+vec b,quad if quad vec a=2hat i-hat j+2hat k and vec b=-hat i+hat j-hat k

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