Texas Instruments TI-82 STATS Manual Book page 69

angle(
abs(
4Rect
4Polar
returns the polar angle of a complex number or list of
angle(
complex numbers, calculated as tan
imaginary part and a is the real part. The calculation is adjusted
by +p in the second quadrant or Np in the third quadrant.
a bi returns tan
angle( + )
r i returns
q
angle( e^( ))
(absolute value) returns the magnitude (modulus),
abs(
(real2+imag2) , of a complex number or list of complex
numbers.
a bi returns (a2+b2) .
abs( + )
r i returns r (magnitude).
q
abs( e^( ))
(display as rectangular) displays a complex result in
4Rect
rectangular form. It is valid only at the end of an expression. It
is not valid if the result is real.
complex result
8Rect
(display as polar) displays a complex result in polar form.
4Polar
It is valid only at the end of an expression. It is not valid if the
result is real.
complex result
8Polar
L1 (b/a), where b is the
1
L (b/a).
, where Lp< <p.
q q
returns a+bi.
returns r i .
q
e^( )
Math, Angle, and Test Operations 2.19