Two unit vector when added give a unit vector . Then choose the correct statement.

If the sum of two unit vectors is also a unit vector. Then magnituce of their difference and angle between the two given unit vectors is

If the sum of two unit vectors is also a unit vector. Then magnituce of their difference and angle between the two given unit vectors is

Consider the following statements : 1. The cross product of two unit vectors is always a unit vector. 2. The dot product of two unit vectors is always unity. 3. The magnitude of sum of two unit vectors is always greater than the magnitude of their difference. Which of the above is not correct?

If the sum of two unit vectors is a unit vector, then the magnitude of their difference is :