vec(A)+ vec(B) = 2hat(i) and vec(A) - vec(B) = 4 hat(i) then angle between vec(A) and vec(B) is

vec(A)+ vec(B) = 2hat(i) and vec(A) - vec(B) = 4 hat(i) then angle bet

1.	vec(A)+ vec(B) = 2hat(i) and vec(A) - vec(B) = 4 hat(i) then angle between vec(A) and vec(B) is
Answer» `180^(@)` `143^(@)` `53^(@)` `37^(@)` ANSWER :A