If 'a' and 'b' are unit vectors and `|a+b|=1`, then `|a-b|` is equal to

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

If a and b are unit vectors and a xx b = 1 , then the angle between a and b is

If a and b are unit vectors such that |a xx b| = a.b , then |a + b|^(2) =

If a and b are unit vectors and alpha is the angle between them then a - b will be a unit vector if alpha =

If a, b and care mutually perpendicular unit vectors, then |a+b+c| is equal to...

If a and b are unit vectors and theta is the angle between them then a-b will be a unit vector if