" 13.If "|vec a|=3,|vec b|=4" and the angle between "vec a" and "vec b" is "120^(@)" then the value of "|4vec a+3vec b|" is "

If |vec a|=3,|vec b|=4and the angle between aandb is 120^(@), then find the value of |4vec a+3vec b|

If vec A+vec B=vec C and the angle between vec A and vec B is 120^(@) , then the magnitude of vec C

IF vec x =vec a + vec b, vec y= vec a - vec b,|vec a|=2,|vec b|=3 and the angle between vec a and vec b is pi/3 then |vec x times vec y| is equal to

If |vec a|=8,|vec b|=3 and |vec axvec b|=12, find the angle between vec a and vec b.

If |vec a|=3,|vec b|=5,|vec c|=7 and vec a+vec b+vec c=0 then angle between vec a and vec b is

If |vec(a)| = sqrt(3), |vec(b)| = 2 and angle between vec(a) and vec(b) is 60^(@) , find vec(a).vec(b) .

If | vec a|=8,| vec b|=3 and | vec a x vec b|=12 , find the angle between vec a and vec bdot

If |vec a| = 3, |vec b| = 5, and |vec c| = 4 and vec a + vec b + vec c = vec O then the value of (vec a . vec b + vec b . vec c + vec c .vec a ) =

Let vec a,vec b,vec c are the three vectors such that |vec a|=|vec b|=|vec c|=2 and angle between vec a and vec b is (pi)/(3),vec b and vec c and (pi)/(3) and vec a and vec c(pi)/(3). If vec a,vec b and vec c are sides of parallelogram