If `veca = i + 2j + k, vecb = 2i + j` and `vecc = 3i - 4j - 5k`, then find a unit vector perpendicular to both of the vectors `(veca - vecb)` and `(vecc - vecb)`

Let veca=2i+4j-5k , vecb=i+2j+3k . Then find a unit vector perpendicular to both veca and vecb .

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 .

If veca = hat i+ hat j+ hat k , vecb=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- vec b+3 vecc .

Find a unit vector perpendicular to veca+vecb and veca-vecb , where veca=i-3j+3k and vecb=3i-3j+2k .

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 = 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 . 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 . Then vecc is

Let veca=hati+4hat(j)+2hat(k),vecb=3hat(i)-2hat(j)+7hat(k)" and " vecc=2hat(i)-hatj+4hatk . Find a vector vecd which is perpendicular to both the vectors veca" and "vecb" and " vec c*vecd=18 .