►Polar

On a TI calculator you can transform a complex number in rectangular form (a+bi) to polar form (r∠θ)

MATH ► ► 7

or via the catalog as

CATALOG ⎵

2nd 0 ►►Polar ENTER

Be sure to select the number mode setting a+bi.

To transform the complex number 2 + 4i to 2√5∠1.107148718i

i :

2 + 4 2nd • 2+4i

MATH ► ► 7 2+4i►Polar

ENTER 2+4i►Polar

4.72135955e^(1…

►► 2+4i►Polar

…^(1.107148718i)