Define unit vector.

Define (i) unit vector (ii) null vector (iii) cross product of two vectors vec A and vec B .

Define zero vector.

Let vec a=hat i be a vector which makes an angle of 120^(@) with a unit vector vec b in XY plane.then the unit vector (vec a+vec b) is

Unit Vectors

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

Is the vector sum of the unit vectors veci and vecj a unit vector4? If no, can you multiply this sum by a scalar number to get a unit vector?

Express the vector in unit - vector notation.

The vector (hat i +hat j) is a unit vector.

What is the unit vector perpendicular to the plane of vectors A and B ?