`bara,barb,barc` are three unit vectors such that `|bara-barb|^2+|bara-barc|^2=8` ,then `|bara+2barb|^2+|bara+2barc|^2=`

lf bara,barb,barc are three unit-vectors such that 3bara + 4barb + 5barc = bar0 , then

lf bara,barb,barc are coplanar unit vectors, then [2bara-barb,2barb-barc,2barc-bara]=

IF bara,barb,barc are unit vectors such that bara+barb+barc=0 then the value of bara.barb+barb.barc+barc.bara is

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

Let bara barb barc be three unit vectors such that |bara+barb+barc|=1 and bara bot barb makes angles a and b with bara and barb respectively then cosa+cosb is equal to

If bara,barb barc are three vectors such that bara+barb+barc=0 , where abs(bara)=1,abs(barb)=2,abs(barc)=3 then : bara.barb+barb.barc+barc.bara =

If bara,barb,barc are three coplanar vectors, then [bara+barb" "barb+barc" "barc+bara]=

If bara,barb,barc are unit vectors such that bara.barb=0,bara.barc and the angle between barb and barc is pi/3 then the value of |bara times barb-bara times barc| is _______