Re: drawing

From: William Elliot (marsh_at_privacy.net)
Date: 01/23/05


Date: Sun, 23 Jan 2005 05:57:01 -0800

On Sun, 23 Jan 2005 bryant_j_j@yahoo.com wrote:

> use the trigonometric formula cos(x+y)-cos(x-y)=-2sin(x)sin(y) to make
> things easier.
>
Alsousespacestomakereadingeasier.