In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by

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None of these

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Adding 180°, if the given bearing is less than 180°

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Subtracting 180°, if the given bearing, is more than 180°

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Changing the cardinal points, i.e. substituting N for S and E for W and vice-versa

1.	In quadrantal bearing system, back bearing of a line may be obtained from its forward bearing, by
A.	Adding 180°, if the given bearing is less than 180°
B.	Subtracting 180°, if the given bearing, is more than 180°
C.	Changing the cardinal points, i.e. substituting N for S and E for W and vice-versa
D.	None of these
Answer» D. None of these

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