Posted by **kevin** on Friday, November 3, 2006 at 6:38pm.

-2-2i

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

## Answer this Question

## Related Questions

- equation complex number - z^4 + 81 = 0 (solve) change it to polar, then take ...
- Pre-cal - The number cis 75 + cis 83 + cis91 +...+ cis 147 is expressed in the ...
- Precal - The number cis 75 + cis 83 + cis91 +...+ cis 147 is expressed in the ...
- ORGANIC CHEMISTRY - how will I be able to form the cis,trans and the cis,cis ...
- Trigonometry - Please check if i did right! 2. Choose the point that lies on the...
- Trigonometry - 2. Choose the point that lies on the curve r = 2 – 3 sin θ. ...
- Trigonometry - 2. Choose the point that lies on the curve r = 2 – 3 sin θ. ...
- trigonometry - 2. Choose the point that lies on the curve r = 2 – 3 sin θ. ...
- trigonometry - 2. Choose the point that lies on the curve r = 2 – 3 sin θ. ...
- Maths - Could someone help me with this question Write in polar form : sinx - i ...