NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Plotting vs calculating Position
From: Bob Goethe
Date: 2015 Jul 30, 14:00 -0700
From: Bob Goethe
Date: 2015 Jul 30, 14:00 -0700
>> You really only need the first quadrant of the sine function to fill in all the rest by reflection of the argument and/or flipping the sign of the result. Right?<<
Right you are!
I took calculus and trigonometry 45 years ago in high school. Had I had a teacher with the first ounce of curiosity about the world in which we live, I am confident that she could have captivated my attention. As it is, I have only discovered the magic of sines and cosines over the last year of learning more about sight reduction. Ah well...better late than never. The plus of learning this kind of thing later in life is that, allegedly, it should help reduce my chance of getting Altzheimer's.
Bob
