The principal argument of a complex number is the unique angle associated with that number when expressed in polar form, typically measured in radians. This angle indicates the direction of the complex number in the complex plane and is crucial for understanding its geometric representation. The principal argument is usually confined to the range from $-rac{ ext{pi}}{2}$ to $rac{3 ext{pi}}{2}$, providing a standard way to describe the angle of any complex number.
congrats on reading the definition of Principal Argument. now let's actually learn it.