Convert Quadrantal Bearings to Whole Circle Bearing -Example

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:

How to draw the line for a Q.B ??

For Example: N 30°30՛ E, S 20°45՛ W & for N 25° W.

In case of N 30°30՛ E, the line will be drawn starting from the North line up to 30°30՛ towards the East line.

In case of S 20°45՛ W, the line will be drawn starting from the South line up to 20°45՛ towards the West line.

In case of N 25° W, the line will be drawn starting from the North line up to 25° towards the west line.

Now, the whole circle bearing can be written directly as below:

1. Line OB, W.C.B = 30°30՛

2. Line OC, W.C.B =180° – 50° = 130°

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

4. Line OE, W.C.B = 360° – 25° = 335°