posted by kevin .
in polar form = 2.8 cis 2.35??
-3+4i polar form = 5 cis 2.2???
1 - sqaureroot(3i) polar form = 2 cis 1.04??
What is cis?
never mind I have the right answers.
polar form z = r (cos O + i sin O ) is also written in an abbreviated form
z = r cis O
cos + sin = cis