Texas Instruments TI-84 - Manual (Page 81)

Chapter 2: Math, Angle, and Test Operations 78
angle(a+bi) returns tan
L1
(b/a).
angle(re^( q
i)) returns
q , where Lp < q < p .
abs( abs( abs( abs(
abs( (absolute value) returns the magnitude (modulus), , of a complex
number or list of complex numbers.
abs(a+bi) returns .
abs(re^( q
i)) returns r (magnitude).
4
Rect Rect Rect Rect
4 Rect (display as rectangular) displays a complex result in rectangular form. It is valid
only at the end of an expression. It is not valid if the result is real.
complex result
8 Rect returns a+bi.
2 2 imag + real
( )
a2 b2 +
( )