CIE A Level Maths: Pure 3复习笔记7.1.4 Position Vectors

What is a position vector?

• Position vectors describe the position of a point in relation to the origin
• They are different to direction vectors which describe the direction and distance between any two points

Distance between two points

• The distance between two points is the magnitude of the vector between them (see Magnitude Direction)

• For position vectors we can find the distance between two points by using the respective co-ordinates