Let `veca = 2i + j+k, vecb = i+ 2j -k and a` unit vector `vecc` be coplanar. If `vecc` is pependicular to `veca`. Then `vecc` is

Let veca = 2i + j+k, vecb = i+ 2j -k and a unit vector vecc be coplanar. If vecc is pependicular to veca .Find vecc .

If veca =2i +4j - 5k, vecb =i + j + k and vecc =j+2k . Find the unit vector in the opposite direction of veca+vecb+vecc

If veca = 2i+j-k, vecb =-i+2j-4k and vecc=i+j+k , then find (vecaxxvecb).(vecbxxvecc)

Let veca and vecb be two orthogonal unit vectors and vecc is a vector such that vecc xx vecb = veca-vecc , then |vecc| is equal to

Let veca,vecb and vecc are vectors such that |veca|=3,|vecb|=4and |vecc|=5, and (veca+vecb) is perpendicular to vecc,(vecb+vecc) is perpendiculatr to veca and (vecc+veca) is perpendicular to vecb . Then find the value of |veca+vecb+vecc| .

If veca= hat i+ hat j+ hat k , vec b=2 hat i- hat j+3 hat k and vecc= hat i-2 hat j+ hat k find a unit vector parallel to the vector 2 veca- vecb+3 vecc .

Let vecA , vecB and vecC be vectors of legth , 3,4and 5 respectively. Let vecA be perpendicular to vecB + vecC, vecB " to " vecC + vecA and vecC " to" vecA + vecB then the length of vector vecA + vecB+ vecC is __________.

Let vecA , vecB and vecC be vectors of legth , 3,4and 5 respectively. Let vecA be perpendicular to vecB + vecC, vecB " to " vecC + vecA and vecC " to" vecA + vecB then the length of vector vecA + vecB+ vecC is __________.

Let vecA , vecB and vecC be vectors of legth , 3,4and 5 respectively. Let vecA be perpendicular to vecB + vecC, vecB " to " vecC + vecA and vecC " to" vecA + vecB then the length of vector vecA + vecB+ vecC is __________.