If a = i + j, b = j + k and c = i + k then a unit vector in the direction of a - 2b + 3c is

If a = I + j, b = j + k and c = k +i , a unit vector parallel to a + b + c is

If a = i + j - 2k, b = -i + 2j + k, c = i - 2j + 2k, then a unit vector parallel to a + b + c =

If a = 3i - 2j + k and b = i + 2j + 5k, then the unit vector along a - b is

Let a=2i+4j-5k , b=i+j+k and c=j+2k .Find the unit vector in the opposite direction of a+b+c

If a = 3i - 2j + k, b = -i + j + k then the unit vector parallel to the vector a + b is

If the position vectors of A, B are 2i - 9j - 4k, 6i - 3j + 8k then the unit vector in the direction of vec(A)B is

I : If a = 3i - 2j + k, b = 2i - 4j - 3k, c = -i + 2j + 2k then a + b + c = 4i + 4j II : If a = i - j + 2k, b = 2i + 3j + k, c = i - k, then magnitude of a + 2b - 3c is sqrt(78)

If vec a=hat i+hat j,vec b=hat j+hat k,vec c=hat k+hat i find the unit vector in the direction of vec a+vec b+vec c