Euler's Formula and Euler's Identity (Lesson and Exercises)

Engineering Mathematics (Chapter 4)

Chapter 4: Coordinate Systems

4.1 INTRODUCTION

      The coordinate system is the method for identifying the location of a point on the earth...
      The coordinate of a point describes its position. This chapter outlines several ways in which
       the position of a point can be described. The most common coordinate system is the X-Y system:

4.2  CARTESIAN COORDINATE SYSTEM - TWO DIMENSIONS (2D)                      

       The Cartesian coordinate system is named after the French mathematician Descartes.

       The system comprises two axes - the x-axis and the y axis - which intersect at right 

        angles at the point O.