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If whole circle bearing of any line is W1, that of the preceding line is W2 and “d” is the deflection angles to the right, then choose the correct expression:
  • a)
    W= W2 + d
  • b)
    W= W2 - d
  • c)
    W= W2 + 2d
  • d)
    W= W2 - 2d
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
If whole circle bearing of any line is W1, that of the preceding line ...
The included angle between the two lines is A, then the whole circle bearing of the new line formed by extending the preceding line by the included angle A is:

W3 = W1 + A - 180°

Note: This formula assumes that the angles are measured in degrees and that the bearings are given in the whole circle notation (i.e. from 0° to 360°).
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Community Answer
If whole circle bearing of any line is W1, that of the preceding line ...
True meridian- W2. magnetic meridian - W1, magnetic declination- d ( +right side of north)
true bearing of line= magnetic meridian + declination
W2 = W1+d
W1=W2-d
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If whole circle bearing of any line is W1, that of the preceding line is W2and “d” is the deflection angles to the right, then choose the correct expression:a)W1= W2+ db)W1= W2- dc)W1= W2+ 2dd)W1= W2- 2dCorrect answer is option 'B'. Can you explain this answer?
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