Absolutely fantastic!!! <img src="/images/graemlins/grin.gif" alt="" /> <img src="/images/graemlins/grin.gif" alt="" /> <img src="/images/graemlins/grin.gif" alt="" />
That is exactly how it gets done. Now if your math skills are properly honed, and you either memorize the sine table or bring a piece of paper with the table printed on it with you, you can do the math without the calculator. If you have a good medium (like snow, sand, or dirt) and a stick, you can draw or sketch the triangulation out without the pad of paper and pencil. It is rough, but it does work. Instead of using miles as a measure, I count paces, which is easier to evaluate, but if you're good at measuring distance travelled, then miles will certainly work.
Once you have your location figured out relative to the landmark, if you know the location of any other point relative to the landmark, you can calculate the bearing and distance to that location, all without a map in hand, using just a compass. Isn't that just handy as all getup?
I'll admit, the one thing I have to have (besides the compass, of course) is the sine table with me. I've memorized it and forgot it so many times my mind is no longer reliable enough to trust. Did I mention I also wear a calculator watch as my EDC everywhere I go? <img src="/images/graemlins/smirk.gif" alt="" />
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)