<div dir="ltr">thank you gentlemen, this is what I needed. never figured out that atan is arctn.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Feb 2, 2020 at 8:49 PM Jack <<a href="mailto:jack@rybn.org">jack@rybn.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hello,<br>
<br>
You can look at :<br>
<a href="http://yadegari.org/expr/expr.html" rel="noreferrer" target="_blank">http://yadegari.org/expr/expr.html</a><br>
++<br>
<br>
Jack<br>
<br>
<br>
<br>
Le 02/02/2020 à 20:18, Csaba Láng a écrit :<br>
> Dear list,<br>
> <br>
> how would you calculate with an expression this formula:<br>
> <br>
> arctg(y/x)<br>
> <br>
> <br>
> looks like tan, sin, cos cannot be in the expression, does it mean I<br>
> have to brake it into parts?<br>
> <br>
> <br>
> Best,<br>
> <br>
> <br>
> Popesz<br>
> <br>
> <br>
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> <br>
<br>
<br>
<br>
<br>
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</blockquote></div>