Civil Engineering - Surveying - Discussion

14. 

The bearing of line AB is 152° 30' and angle ABC measured clockwise is 124° 28'. The bearing of BC is

[A]. 27° 52'
[B]. 96° 58'
[C]. 148° 08'
[D]. 186° 58'

Answer: Option B

Explanation:

No answer description available for this question.

Karthikranga said: (Apr 12, 2014)  
How you get this answer can you explain the procedure for this?

Dheeraj said: (Oct 3, 2014)  
Back bearing of ab line is 332 degree 30 min. Therefore angle reduced bearing with north is 360 minus above bearing which is 27 degrees 30 min. Then subtract this from above angle that is 124 degree 28 min minus 27 degree 30 min gives you answer.

Juliet Osunde said: (Oct 13, 2014)  
Bearing of AB = 152° 30'
Angle at B = 124° 28'
The bearing of BC=?

Back bearing= forward bearing + included angle,
CB=152 30' + 124 28'= 276 58`.

Since we asked to find the forward bearing i.e BC,
BC= 276 58` - 180 = 96 58'.

Mr. Salim Mulla said: (Aug 4, 2016)  
152° 30'+ 180° = 332°30'.
360° - 332° 30' = 27° 30°.

Then do 124° 28' - 27° 30' = 96° 58'.

Hope you understand.

Sameer said: (Dec 30, 2018)  
Thanks a lot for explaining @Mr Salim.

Alok said: (Jan 24, 2019)  
I am not getting the solution. Please, anyone explain me.

Vikas Dubey said: (Dec 6, 2019)  
Bearing of any line = BB.of line + angle.

If angle is more than 180' than, -360'.

You will find the answer.

Aswathy said: (Dec 7, 2019)  
Forward Bearing of AB =152°30'
Back Bearing of AB= 180°-152°30=27°30'

FB of BC= Included angle - BB of AB
=124°28'-27°30'
=96°58'.

Adeel Rehman said: (May 11, 2020)  
Best Explanation, Thanks @Julliet Osunde.

Burhan Ali said: (Aug 24, 2020)  
FB of AB=152°30'
BB of AB=152°30 ' +180° = 332°30'
FB of BC = BB of AB at B=332 °30' + 124°28' = 456°58'.

= 456°58' - 360° = 96°58'(remember if angle is more then 360° Subtract 360°).

Kanchan Thakur said: (Sep 9, 2020)  
Bearing of AB=152°30'
<ABC=124°28'

Bearing of BC=?
Back bearing of AB = BA = F.B + 180 = 152°30' + 180° = 332°30'
Bearing of bc = b.b of AB+<ABC = 332°30' + 124°28' = 456°58'

This is more than 360 so;
Bearing of BC = 456°58' - 360° = 96°58'.

Kripa said: (Sep 19, 2020)  
Then for angle AC?

Manvi said: (Sep 19, 2020)  
Please explain, how to calculate the angle AC?

Prashanth said: (Jan 10, 2021)  
For anticlockwise how to measure it?

Post your comments here:

Name *:

Email   : (optional)

» Your comments will be displayed only after manual approval.