Surveying
Systematic errors

All listed here
Are also known as cumulative errors
Can be removed by applying corrections to the observed values
Always follow some definite mathematical law

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Surveying
For a line AB

the forebearing of AB and back bearing of AB differ by 180°
both (A) and (B) are correct
none is correct
the forebearing of AB and back bearing of BA differ by 180°

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