Mathematics · important
Real and imaginary parts via modulus and argument for JEE
Modulus and argument (or amplitude) of a complex number
Formula
\(a=r\cos\theta,\quad b=r\sin\theta\)
Variables: \(z=a+ib=r(\cos\theta+i\sin\theta)\)
Conditions: \(r\ge 0\)
Conversion between Cartesian and polar forms.