Question

What does \[|\vec{P_1P_2}|\] equal?

Options

• The initial point of the vector

• The negative of \[\vec{P_2P_1}\] only

• The distance between \[P_1\] and \[P_2\]

• The terminal point of the vector

Answer 1

The magnitude of a vector is its length. For a vector joining two points, this length is exactly the distance between those points.