IF `|bara+barb|=|bara-barb|` then prove that the vectors `bara and barb` are perpendicular to each other.

The vectors bara,barb and bara+barb are

If bara and barb are unit vectors such that bara + 2barb and 5bara- 4barb are perpendicular to each other, then the angle between bara and barb is

If bara and barb are non-collinear vectors, then

IF the non-zero vectors bara and barb are perpendiculars to each other than the solution of the equation barr times bara=barb is given by

If bara and barb be parrallel vectors, then [bara" "barc" "barb]=

IF bara times barb = barc and barb times barc=bara then

If bara.barb=barb.barc=barc.bara=0 then the value of [bara" "barb" "barc] is equal to

Let bara,barb and barc be non-zero vectors such that (bara times barb)times barc=1/3|barb||barc|bara . If theta is the obtuse angle between the vectors barb and barc then sin theta equals

If bara,barb,barc are three vectors, then [bara,barb,barc] is not equal to