If the quadrantal bearing of a line AB is S 31°35' E, then its whole circle bearing is equal to:?
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Option 3 : 148°25'
Concept:
The whole circle bearing of any line is its deviation measured in the clockwise direction from the north end reference.
Important table for conversion of a whole bearing reading to the quadrantal bearing is given below:
|
Sr No. |
Whole Circle Bearing (WCB) |
Quadrantal Bearing (QB) |
Quadrant |
|
1 |
0° to 90° |
WCB |
NE |
|
2 |
90° to 180° |
180° - WCB |
SE |
|
3 |
180° to 270° |
WCB – 180° |
SW |
|
4 |
270° - 360° |
360° - WCB |
NW |
Calculation:
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∴ WCB = 180° 00' - 31° 35' = 148° 25'
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