Let a, b and c be three unit vectors such that `atimes(btimesc)=(sqrt(3))/(2)(b+c)`. If b is not parallel to c , then the angle between a and b is

Let vec a,vec b and vec c be there unit vectors such that vec a xx(vec b xxvec c)=(sqrt(3))/(2)(vec b+vec c)* If vec b is not parallel to vec e, then the angle between vec a o*vec b is:

If a,b,c be three units vectors such that a xx(b xx c)=((1)/(2))b;b and c being non- parallel then

Let vec(a).vec(b) and vec(c) be three unit vectors such that vec(a) xx (vec(b) xx vec(c)) = (sqrt3)/(2) (vec(b) + vec(c)) . If vec(b) is not parallel to vec(c) , then the angle between vec(a) and vec(b) is

Let hat(a) , hat(b) " and " hat( c) be three unit vectors such that hat(a) xx (hat(b) xx hat( c)) = (sqrt(3))/(2)( hat(b) +hat(c )). If hat(b) is not parallel to hat( c) then the angle between hat(a) " and " hat(b) is

Let hat(a) , hat(b) " and " hat( c) be three unit vectors such that hat(a) xx (hat(b) xx hat( c)) = (sqrt(3))/(2)( hat(b) +hat(c )). If hat(b) is not parallel to hat( c) then the angle between hat(a) " and " hat(b) is

Let the vectors a and b be such that |a|=3 and |b|=(sqrt(2))/(3) , then axxb is a unit vector, if the angle between a and b is

Let a and b be two unit vectors. If the vectors c = a + 2b and d = 5a - 4b are perpendicular to each other, then the angle between a and b is