The angle between `vec a` and `vec b` is `120^(@)`. If `|vec a|=3,|vec b|=4` , then the length of the vector `2vec a-(3vec b)/(2)` is equal to

If |vec(a)|=2 and |vec(b)|=3 , then |vec(a) xx vec(b)|^(2)+ |vec(a).vec(b)|^(2) is equal to

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 a and vec b are two vectors such that |vec a+vec b|=|vec a|, then prove that vector 2vec a+vec b is perpendicular to vector vec b

Let vec a , vec b , vec c are three vectors , such that vec a + vec b + vec c = vec 0 .If , |vec a|=3 , |vec b|=4 and | vec c|=5 , then the value of, |vec a+vec b|^(2) + |vec b-vec c|^(2) + |vec c+vec a|^(2) , equal to :

If angle between vec a and vec b is pi/3 then angle between vec a and -2vec b is:

If two vectors vec a and vec b are such that |vec a|=2,|vec b|=1 and vec a*vec b=1, find (3vec a-5vec b)*(2vec a+7vec b)

If two vectors vec a and vec b are such that |vec a|=2,|vec b|=1 and vec avec b=1, then find rthe value of (3vec a-5vec b)2vec a+7vec b

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

cosine of an angle between the vectors (vec a+vec b) and (vec a-vec b) if |vec a|=2,|vec b|=1 and angle between vec a and vec b=60^(^^)2^(@) is

If vec(a).vec(b)=|vec(a)xx vec(b)| , then angle between vector vec(a) and vector vec(b) is :