If `|vec A-vec B|=|vec A|+|vec B|` ,then the angle between `vec A` and `vec B` is

If vec A and vec B are two non-zero vectors such that |vec A+vec B|=(|vec A-vec B|)/(2) and |vec A|=2|vec B| then the angle between vec A and vec B is theta such that cos theta=-(m)/(n) (where m and n are positive integers and (m)/(n) lowest form then find m+n

If |vec A + vec B|= |vec A|+|vec B| , then what is the angle between vec A and vec B .

If |vec A + vec B=|vec A - vec B| , then angle between vec A and vec B is _____.

If |vec a - vec b| = |vec a| = |vec b| =1 then the angle between vec a and vec b is

If |vec(A)+vec(B)|=|vec(A)|=|vec(B)| then the angle between vec(A) and vec(B) is

If |vec(A)+vec(B)|=|vec(A)|=|vec(B)| then the angle between vec(A) and vec(B) is

If vec a and vec b are non - zero vectors and |vec a+ vec b| = |vec a - vec b| , then the angle between vec a and vec b is

If vec a and vec b are vectors such that |vec a + vec b| = |vec a - vec b| , then the angle between vec a and vec b is

If |vec a|=|vec b|=|vec a-vec b| then the angle between vec a and vec b is

If |vec A+ vec B| = |vec A| + |vec B | , then angle between A and B will be