Symbols:C/cis

Polar Form of Complex Number

$\cis$

The expression:

$r \cis \theta$

is a shortened form of:

$r \paren {\cos \theta + i \sin \theta}$

The $\LaTeX$ code for \(\cis\) is \cis .

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): cis
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): cis