A bit of trig isn't complicated. I can probably calculate most coordinates involving triangles quicker than
I could open a book and find the answer from a table or work it with a cad program. As long as I have a
calculator of course.
I didn't learn any maths at school. when I was 16 I meet a mate after he had been on day release, he taught
me trig in minutes and it stuck! I guess I could see the usefulness of it. What I learned from Gray was the basics
and is in upper right corner of my pic, that is all you need to know most of the time. This all for right angled triangles which is why in the example I divide the triangle into 2.
The example would be simple to lay out, 6 bolts in a hexagon are sitting on equilateral triangles, so if
all sides are the same that means the cord/distance is equal to the radius and 12 bolts you would divide
each bolt pair in 2. I have never been taught any of this there may be an easier way to do it.
I worked out the distance between bolts and as you can see it is simple. I don't usually write this stuff down
so if any of it isn't clear I will try and explain. won't I look a **Language** if I got that wrong.
I understand normal and spherical trigenometry.. but with a rule, protractor, scrap of paper and a pencil, a scriber, and dividers you can mark out any pcd configuration you like. no calcultor required.
And 6 is even easier as the radius= the distance between hole centers.
It's something I would like to learn for my own benefit. I am almost there. For some maths is easy. For me it's sometimes tricky. I didn't go to a normal school. Unfortunately it was boarding school for me. But I will pick it up as I go along.