Find the sum of `3.bar2 and 5.bar4`

The sum of 0.bar3 and 0.bar4 is

Find the value of ( 2.bar 6 - 0.bar 9 ) is ( a ) 4/3 ( b ) 1 /3 ( c ) 5/3

In an octagon ABCDEFGH of equal side, what is the sum of bar(AB)+bar(AC)+bar(AD)+bar(AE)+bar(AF)+bar(AG)+bar(AH) if bar(AO)=2hati+3hatj-4hatk

Find the vector area and area of the triangle with vertices bar(i) + bar(j)-bar(k), 2bar(i)- 3bar(j) + bar(k), 3 bar(i) + bar(j)- 2bar(k) .

Find the distance of a point (2,5,-3) form plane bar(r ).(6bar(i) - 3bar(j) + 2bar(k)) = 4 .

The value of 0.bar2+0.bar3+0.bar4+0.bar9+0.bar(39) is

bar(a) and bar(b) are unit vectors. |bar(a)+bar(b)|=sqrt(3) then the value of (3bar(a)-4bar(b)).(2bar(a)+5bar(b)) = ……………