i need to use excel in some calculatoin and i found difficult to write an
equation in polar as polar contain angle, so there is no way to write a polar
if there is no angle.

You are right. If you don't have an angle, you can't write the equation in
polar form.
You may, of course, have parameters from which you can derive an angle.
What is it that you are trying to calculate? Why the particular desire to
do it in polar form?
--
David Biddulph

"vi_friend" wrote in message
...
i need to use excel in some calculatoin and i found difficult to write an
equation in polar as polar contain angle, so there is no way to write a
polar
if there is no angle.

Some stuff here might help:
http://people.stfx.ca/bliengme/ExcelTips/Polar.htm
If no, please give us more details
best wishes
--
Bernard V Liengme
Microsoft Excel MVP
www.stfx.ca/people/bliengme
remove caps from email

"vi_friend" wrote in message
...
i need to use excel in some calculatoin and i found difficult to write an
equation in polar as polar contain angle, so there is no way to write a
polar
if there is no angle.

You could do your math with complex numbers.
To convert polar to complex, use
=IMEXP(COMPLEX(LN(rho),theta))
Kudos to Dana DeLouis 8/28/2006