If ` vec xa n d vec y` are unit vectors and `| vec z|=2/7` such that ` vec z+ vec zxx vec x= vec y ,` then find the angle `theta` between ` vec xa n d vec zdot`

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

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 and vec b are unit vectors find the angle between vec a+vec b and vec a-vec b

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

Vectors vec a\ a n d\ vec b are such that | vec a|=3,\ | vec b|=2/3a n d\ ( vec axx vec b) is a unit vector. Write the angle between vec a\ a n d\ vec bdot

If vec a and vec b are two unit vectors such that vec a+vec b is also a unit vector,then find the angle between vec a and vec b.

If vec a and vec b are two unit vectors such that vec a+vec b is also a unit vector then find the angle between vec a and vec b

If vec a\ a n d\ vec b are unit vectors such that vec axx vec b is also a unit vector, find the angle between vec a\ a n d\ vec bdot

If vec a\ a n d\ vec b are two vectors such that | vec axx vec b|=3\ a n d\ vec adot vec b=1, find the angle between.