Finding modulus and argument of complex number (x+iy)

Draw argand diagram

Modulus=|z|= length of the line

So |z|=(x2+y2)0.5

Argument=Angle between real (x axis) and line

so arg(z)=arctan(y/x)

EF
Answered by Emma F. Further Mathematics tutor

5992 Views

See similar Further Mathematics A Level tutors

Related Further Mathematics A Level answers

All answers ▸

If 0<x<1, find the following sum: S = 1+2*x + 3*x^2 + 4*x^3 + ...


Using z=cos(θ)+isin(θ), find expressions for z^n-1/z^n and z^n+1/z^n


Integrate f(x) = 1/(1-x^2)


Prove by mathematical induction that, for all non-negative integers n, 11^(2n) + 25^n + 22 is divisible by 24


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences