" Find the sum of "3.bar(2)" and "5.bar(4)

The sum of 0.bar3 and 0.bar4 is

If |bar(a)| = 2, |bar(b)| = 3, |bar(c )| = 4 and each of bar(a), bar(b) , bar(c ) is perpendicular to the sum of the other two vectors, then find the magnitude of bar(a) + bar(b) + bar(c ) .

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

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)) = ……………

Find the unit vector in the direction of the sum of the vectors bar(a) = 2bar(i)+ 2bar(j) - 5bar(k) and bar(b) = 2bar(i) + bar(j) + 3bar(k) .

Find the ratio in which the point bar(i)+2bar(j)+3bar(k) divides the join of -2bar(i)+3bar(j)+5bar(k) and 7bar(i)-bar(k) .

If bar(a)=2bar(i)-3bar(j)+5bar(k),bar(b)=-bar(i)+4bar(j)+2bar(k) then find bar(a)timesbar(b) and unit vector perpendicular to both bar(a) and bar(b) .