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prime:polrec [2017/10/16 20:50]
webmasterpdx
prime:polrec [2017/10/20 19:13] (current)
webmasterpdx
Line 7: Line 7:
 If you enter a polar coordinate as in 1∠(π/4), and hit enter, and then hit the ∠ button again, it'll convert the number to it's rectangular/​complex form. If you enter a polar coordinate as in 1∠(π/4), and hit enter, and then hit the ∠ button again, it'll convert the number to it's rectangular/​complex form.
  
-The following function is a useful one to have in your arsenal. It will convert from polar to rectangular and vice versa...automatically. ​Note that it uses a shortcut for the STRING() function by just doing T:​=""​+V;​ to convert the numerical variable V to a string. (just a useful tip).+Note that if your system is set to radians by default, you can enter degrees by using shift-units and from the units menu, select angle-deg and the value will appear as 30_deg for example. 
 +if you type 1∠30_deg and hit enter, it'll convert automatically to 1∠0.5325... (radians). 
 +To enter a point this way in the geometry app, you cannot enter point(1∠30_deg),​ but you can enter 1∠30 on the home view and hit enter to convert to radians. Then, in the geometry app, you can enter point() and select menu-copy_from_home and select the radian version to put it in the point call. You can alternatively enter point(EXPR("​1∠30_deg"​)). 
 + 
 +The following function is a useful one to have in your arsenal. It will convert from polar to rectangular and vice versa...automatically. 
  
 <​code>​ <​code>​
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 BEGIN BEGIN
  LOCAL T,A,B;  LOCAL T,A,B;
- T:=""​+Z;+ T:=STRING(Z);
  IF INSTRING(T,"​∠"​) THEN  IF INSTRING(T,"​∠"​) THEN
   // POLAR   // POLAR
prime/polrec.1508212234.txt.gz · Last modified: 2017/10/16 20:50 by webmasterpdx