Civil Engineering - Surveying - Discussion

Discussion Forum : Surveying - Section 3 (Q.No. 12)
12.
Back bearing of a line is equal to
Fore bearing ± 90°
Fore bearing ± 180°
Fore bearing ± 360°
Fore bearing ± 270°
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
3 comments Page 1 of 1.

Mangesh said:   4 years ago
The Difference between FB and BB is 180.

Thushara said:   4 years ago
@Vishal.

Use plus sign when FB is less than 180 and minus sign when FB greater than 180.
(1)

Vishal said:   5 years ago
Can anyone explain when we are using + & -?

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