let a,b, and c be three unit vectors such that a is perpendicular to the plane off b and c. if the angle betweenn b annd c is `(pi)/(3)`, then `|axxb-axxc|` is equal to

If vec(a).vec(b) and vec(c ) are unit vectors such that vec(a) is perpendicular to the plane of vec(b) , vec(c ) and the angle between vec(b) and vec(c ) is (pi)/(3) . Then what is |vec(a) +vec(b)+vec(c )| ?

If vec(a) , vec(b), vec(c) are unit vectors such that vec(a) is perpendicular to the plane of vec(b), vec(c) , and the angle between vec(b) and vec(c) is (pi)/(3) Then, what is |vec(a)+vec(b)+vec(c)| ?

If a, b, c are three unit vectors such that a + b + c = 0 , then a.b + b.c + c.a is equal to

Let a,b and c be three unit vectors such that 3a+4b+5c=0 . Then which of the following statements is true?

Let a,b and c be three unit vectors such that 3a+4b+5c=0 . Then which of the following statements is true?