Why the theta choice for complex number display in polar form on the HP35s ? Message #1 Posted by Mohammed Hadi on 29 Nov 2009, 12:19 a.m.
This is regarding the theta symbol used which is barely distinguishable from numeral 8. I'm wondering why hp chose this symbol instead of the more useful symbol used in the Casio fx-991ES (fx-115ES in the US).
If you look-up any introductory electrical circuits textbook for example, you'll find that complex numbers in polar form are written as
magnitude (angle symbol) phase
where the angle symbol is similar to a numeral 7 rotated (not flipped) by 180 degrees.
Now, this symbol should be easily reproducable by the 35s display and clearly distinguishable as a phase/angle separator.
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