How will you describe the position of a table lamp on your study table to another person?
The position of the table lamp is at a distance of a units from the left edge of the top of the table and at a distance b units above the bottom edge of the top of the table. We have marked the bottom edge as the line AX and the left edge as the line AY. Here AY⊥AX. We measure all distances along AX and AY from the corner A. The position of the lamp can be described as (a,b).
The position of the lamp can be described as (a,b)