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2. Procedure
An open traverse< Figure I-2, is closed by making it meet the closure condition:
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Equations D-3 and D-4 |
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Figure J-2 |
When the latitudes and departures are added, the amount by which they don't equal zero are the latitude and departure of the closing line, Figure I-3.
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Figure J-3 |
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Equations J-1 and J-2 |
Once the latitude and departure of the closing line are determined, its length and direction can be computed from equations we've used before:
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Equation J-3 |
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Equation J-4 |
The mathematical signs on the closing latitude and departure determine in which quadrant the line is.