grid reference problem

[susumandrai]

A map usesgrid references for positions. A grid reference for a point of 987654 means the
point is 987 m East and 654 m North of the fixed referencepoint.
A bridge FG crosses a river.
The length of the bridge is 24 m.
Angle GFH is 36˚.
The grid reference for F is 163871.
2ev6wbs.jpg


Find the grid reference for the end of the bridge at G.

[Subhotosh Khan]

A map usesgrid references for positions. A grid reference for a point of 987654 means the
point is 987 m East and 654 m North of the fixed referencepoint.
A bridge FG crosses a river.
The length of the bridge is 24 m.
Angle GFH is 36˚.
The grid reference for F is 163871.
2ev6wbs.jpg


Find the grid reference for the end of the bridge at G.

Assume:

<GFH = Θ

then

FH = FG * cos(Θ)....... and continue......

Please share your work with us, indicating exactly where you are stuck - so that we may know where to begin to help you.

[mmm4444bot]

You forgot to include your question about this exercise!

What do you need? Where are you stuck? What have you tried, thus far?

[susumandrai]

You forgot to include your question about this exercise!

What do you need? Where are you stuck? What have you tried, thus far?

Please tell me if this answer is correct:
FH = 24cos 36 = 19.4
GH = 24sin 36 = 14.1

Grid reference for F is 163871
So 163 + 19.4 = 182.2 so I take the easting as 182
871 + 14.1 = 885.1 so I take the northing as 885
I rounded down in both cases


Therefore Grid reference = 182885

[mmm4444bot]

Please tell me if this answer is correct:

Grid reference = 182885

Looks good to me.