AS/A2 Pure 5 Pure 6

P4 Topic 3: Complex numbers
Modulus and argument of complex numbers
This Argand diagram shows the modulus, |a| or |OA|, and the argument, arg(a), of the complex number a.

Please enable Java for an interactive construction (with Cinderella).

Summary the modulus |OA| is the length of the line segment OA. the argument arg(a) is measured anticlockwise from the positive real axis Uses Cinderella interactive geometry.