Civil Engineering

Convert Quadrantal Bearings to Whole Circle Bearing

Convert the following quadrantal bearing into whole circle bearing 
1. N 30°30՛ E
2. S 50° E
3. S 20°45՛ W
4. N 25° W
Solution:
The whole circle bearing can be written directly as below Line OB, W.C.B = 30°30՛

W.C.B For Quadrantal Bearings N 30°30՛ E
W.C.B For Quadrantal Bearings N 30°30՛ E


Line OC, W.C.B =180° – 50° = 130°

For Quadrantal Bearings S 50° E
W.C.B For Quadrantal Bearings S 50° E

Line OD, W.C.B = 180° + 20°45՛ = 200°45՛

W.C.B For Quadrantal Bearing 20°45՛
W.C.B For Quadrantal Bearing 20°45՛

Line OE, W.C.B = 360° – 25° = 335°
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