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The fore bearing of line AB is 50°. The included angle ABC is 240°. The FB of line BC is:
- A290°
- B110°
- C210°
- D190°
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CCommunity
FB of forward line = FB of backward line + included angle;
If sum is more than 180°, deduct 180°
If sum is more than 540°, deduct 540°
If sum is less than 180°, add 180°
FB of line BC = 50 + 240 = 290°. Sum is more than 180°, hence deducting 180°, we get FB of line BC = 290- 180 = 110°.
If sum is more than 180°, deduct 180°
If sum is more than 540°, deduct 540°
If sum is less than 180°, add 180°
FB of line BC = 50 + 240 = 290°. Sum is more than 180°, hence deducting 180°, we get FB of line BC = 290- 180 = 110°.