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Mining Engineering · Q281

Mine Surveying

Engineering and GATE · Mining Engineering · question 281

Q281

In Quadrantal system back bearing of a line may be obtained from its forward bearing by . . . . . . . .

A.
Adding 180°, if the given bearing less than 90°
B.
Subtracting 90°, if the given bearing is more than 90°
C.
Changing the cardinal points by substituting N for Sand E for Wand Vise versa
D.
Substracting 180°, if the given bearing is more than 180°
Answer

Answer: Option D

Solution

Answer: Option D
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