On Tue, 2005-10-18 at 18:33 +0330, Roozbeh Pournader wrote:
> About "tg" vs "tan": for a while, "tg", "cotg", and "cosec" were used.
> Then the academic community switched to "tan", "cot", and "csc" but the
> high school trigonometry textbooks remained with "tg" and family. After
> a while, the high school textbooks also switched. Now the common form
> used in all levels of education is "tan" and family.

Ah, something else. When the "tg" and family were the default, all such
trigonometric operators were typeset in italic type, not roman.


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