Question

A surveyor standing at a point X sites a pole Y due east of him and a tower X of a building on a bearing of 046 degrees, after walking to a point W, a distance of 180m on the south east direction, he observes a bearing of Z and Y to be 337 degrees and 050 degrees respectively . Calculate to the nearest meter line XY

Answer 1

I think your diagram is in error, since W is SE of X.
In triangle XYW, we have
X=45°, Y=40°, W=72°
So now we have
XY/sin72° = 180/sin40°
XY = 266.32

Answer 2

First, we can draw a diagram to represent the situation:

```
W
/|
/ |
/ | 180m
/ |
/ Z |
/_____|
X Y Building

```

We are given that XY is due east, so we can draw a line due east from X:

```
W
/|
/ |
/ | 180m
/ |
/ Z |
/_____|
X----->Y Building

```

We can label the angle at X as 46 degrees (since the bearing to the building is 046 degrees). We can also label the angle at Y as 10 degrees (since the bearing from W to Y is 050, which is 40 degrees clockwise from due north). Finally, we can label the angle at Z as 23 degrees (since the bearing from W to Z is 337, which is 23 degrees clockwise from due north).

Now, we can use the Law of Sines to solve for XY:

```
sin(46) / XY = sin(10) / 180
sin(23) / XY = sin(147) / 180
```

Solving for XY in either equation gives:

```
XY = sin(46) * 180 / sin(10) ≈ 1026.6m
XY = sin(23) * 180 / sin(147) ≈ 1026.6m
```

So, to the nearest meter, line XY is approximately 1027m long.

Answer 3

You are correct, I apologize for the error in my diagram and calculation. Thank you for catching that and providing the correct solution.