[Tutor] trig functions

Corran Webster cwebster@nevada.edu
Wed, 10 May 2000 17:48:13 -0700


At 5:06 PM -0600 10/5/00, satori wrote:
> Hey gang,
>
> I've looked through a few of the Python books and I can't find this.  Can we
> do trig functions (specifically cos and sin) in Python?

Yep - the standard math functions (and constants like pi) are available in
the math module.  Just do

from math import *

and away you go.  See the documentation for exactly which functions are
available (it's basically what you get from C's math.h, I think).

> I'm doing a school assignment (university), nobody's heard of Python in the
> lab
> (including the lab instructors) and I can use the language of my choice.
> I'd like to use Python if I can.
>
> I want to build 3 3x3 arrays, filling one with data from the user, the
> second with answers to trig-based functions and the third by doing a matrix
> multiplication (which I will write) multiplying the first and second arrays.

If you are doing matrix based stuff, have a look at numerical python (sorry
I don't have the URL handy, but it's available at www.sourceforge.org).  Of
course if it's an assignment, using a specialised package may be considered
as having too much assistance from outside sources.


Regards,
Corran