A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
From: Andrew Corl
Date: 2006 Mar 27, 11:18 -0500
I am working on a personal project to design a sundial for my house. Yes I know this is not a sundial list.
I need a formula for calculating arcsin and arctan. I have gone on the web and searched a number of different places to look but have not found anything that really helps. I am not looking for a long winded explination of why it works, but just this is what you do to get the answer.
The one formula I have is:
SH=arcsin(cos declination of wall * cos latitude)
I have the declination of the wall and the latitude, but cannot calculate arcsin.
I know that many of you are more into math than I ever hope to be so I decided to seek guidance from you.