Let `vec a` and `vec b` be unequal unit vectors such that `vec a.((vec a-vec b)times(3vec a-4vec b))=vec a+vec b` then the angle between `vec a&vec b` is

If vec a and vec b are unequal unit vectors such that (vec a-vec b)xx[(vec b+vec a)xx(2vec a+vec b)]=vec a+vec b then angle theta between vec a and vec b is 0 b.pi/2 c.pi/4 d.pi

If vec a, and vec b be two non-collinear unit vector such that vec a xx(vec a xxvec b)=(1)/(2)vec b, then find the angle between vec a, and vec b

If vec a and vec b are unit vectors such that (vec a+vec b)*(2vec a+3vec b)xx(3vec a-2vec b)=0 ,then angle between vec a and vec b is 0 b.pi/2c. pi d.indeterminate

If |vec a|+|vec b|=|vec c| and vec a+vec b=vec c, then find the angle between vec a and vec b

Let vec a and vec b be two unit vectors such that |vec a+vec b|=sqrt(3) if vec c=vec a+2vec b+3(vec aXvec b) then 2|vec c| is equal to

vec b,vec c are unit vectors and |vec a|=7vec a xx(vec b xxvec c)+vec b xx(vec c xxvec a)=(1)/(2)vec a then the angle between vec a and vec a is

If vec a,vec b,vec c are 3 unit vectors such that vec a xx(vec b xxvec c)=(vec b)/(2) then (vec b and vec c being non parallel).(a)angle between vec a&vec b is (pi)/(3) (b)angle between vec a and vec c is (pi)/(3)( c)angle between vec a and vec b is (pi)/(2) (d)angle between vec a and vec c is (pi)/(2)

12. If vec a&vec b, are unit vectors such that vec lvec a-vec b|=sqrt(3), then find |vec a+vec b|

If vec a and vec b are two vectors such that |vec a|=4,|vec b|=3 and vec a*vec b=6. Find the angle between vec a and vec b

If vec a and vec b are two vectors such that |vec a|=4,|vec b|=3 and vec avec b=6. Find the angle between vec a and vec b