Three points whose position vectors are `bara+barb,bara-barb and bara+kbarb` are collinear, then the value of `k` is

Three points having position vectors bara,barb and barc will be collinear if

Three points having position vectors bara,barb and barc will be collinear if

The vectors bara,barb and bara+barb are

The vectors bara,barb and bara+barb are

If the points A,B,C and D have position vectors bara,2bara+barb,4bara+2barb and 5 bara+4barb respectively, then three collinear points are

If bara,barb,barc are non-coplanar vectors, then three points with position vectors bara-2barb+3barc,2bara+mbarb-4barc and -7barb+10barc will be collinear if m equals

If bara,barb,barc are non-coplanar vectors, then three points with position vectors bara-2barb+3barc,2bara+mbarb-4barc and -7barb+10barc will be collinear if m equals

If bara and barb are non-collinear vectors, then

[[bara-barb, barb-bara, barc-bara]]=

Show that vectors |barb|bara+|bara|barb and |barb||bara-|bara|b are orthogonal.