If `veca xx vecb = vecb xx vecc = vecc xx veca ,` then `veca + vecb + vecc` is equal to

If [vecaxx vecb vecb xx vecc vecc xx veca] = lamda [veca vecb vecc]^(2), then lamda is equal to :

If veca xx vecb + vecb xx vecc + vecc xx veca = 0 . Show that the vectors veca, vecb, vecc are coplanar.

If [veca xx vecb vecb xx vecc vecc xx veca]=lambda[veca vecb vecc^(2)] , then lambda is equal to

If [veca xx vecb vecb xx vecc vecc xx veca]=lambda[veca vecb vecc]^2 , then lambda is equal to

If |veca|=|vecb|=|vecc|=2 and veca.vecb=vecb.vecc=vecc xx veca=2 , then [veca vecb vecc] cos 45^(circ) is equal to

If (veca xx vecb) xx vecc = vec a xx (vecb xx vecc) , where veca, vecb and vecc are any three vectors such that veca.vecb ne 0, vecb.vecc ne 0 , then veca and vecc are:

If (veca xx vecb) xx vecc = veca xx (vecb xx vecc) where veca, vecb and vecc are any three vectors such that veca.vecb =0, vecb.vecc=0 then veca and vecc are:

If veca + 2 vecb + 3 vecc = vec0 " then " veca xx vecb + vecb xx vecc + vecc xx veca=