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Topic: Help in Trig?
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Dan Flemming

Posts: 1
From: Lake City Fl.
Registered: 7/29/06
Help in Trig?
Posted: Jul 29, 2006 2:32 PM
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I have some calculations that I need to do, in order to find a few points on 2 arcs.

The arc definition is:
center point, X=0.00000000 Y=0.00000000 Z=0.00000000
radius, 1326.00000000
start-angle, 67.38013505
end-angle, 112.61986495
length, 1046.98604944

From left arc end-point, travel 42.0 "horizontally", then vertically back to arc (we will call this "p1").

Next, from "p1", radially 72.0 back to arc (call it "p2") (or 72.0 in straight line back to arc).

Then, the radius of the outside arc = inner-radius + 3.0 (or, radius = 1329.00000000).
(End points can be perpendicular from center to inner arc end-points)

Draw a line (called "L1") from "p1" perpendicular to outer arc (called "p3").

Point "p4" needs to be 1.0 parallel from "L1", on the arc, then draw another line at 90 degrees from "p4", 4.0 parallel to "L1", to "p5" (called "L2").

The other side needs another 4.0 line, on the opposite side from "p2" (just like line "L2").

Can anyone help?
I am in a bind, and sure could use the help!
It's easy to draw, but I nned the functions in arithmic-form.

I can post a streaming flash web-page on my site, if you can help, and need a visual reference.


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