# Re: OT: Math symbols conventions

From: | Tristan <kesuari@...> |

Date: | Wednesday, October 2, 2002, 4:22 |

Andreas Johansson wrote:
> Jan van Steenbergen wrote:
>
>>
>> --- Gustavo Eulalio wrote:
>>
>> > Anyone knows where I can find about math conventions? I'm
>> specially
>> > interested in the trigonometrical symbols (like cos, sin, ...).
>> > I'm asking because most programs I've been using will print
>> 'sin'
>> > for Sine. But we use 'sen' or 'Sen' for that (from Seno) in
>> Portuguese.
>> > I was wondering whether there's some international convention defining
>> > if it's 'sin', or 'sen', or whatever.
>> > I've also seen variants for Tangent: tan, tg, Tg
>>
>> This is how I learnt it:
>> sin (sinus)
>> cos (cosinus)
>> tan (tangens)
>> cot (cotangens)
>> sec (secans)
>> cosec (cosecans)
>
>
> I learnt the same, except "csc" for cosecans. That's what my math
> programme
> on the comp uses, too.

I learnt cosec... Which helps in associating them to sin (sine), cos
(cosine) and tan (tangent); the third letter of coT, seC and coSec is
the first letter of the other thingy they're related to.
Tristan