Posted by **bushra** on Friday, February 15, 2013 at 6:16am.

a hiker walk due east at 4km per hour and a second hiker starting from the same point walks 55 degree north-east at the rate of 6km per hour. H

ow far apart will they be after 2 hours

- maths -
**Reiny**, Friday, February 15, 2013 at 10:12am
the hiker walking east walked 8 km

the hiker walking 55° NE walked 12 km

Since I am not sure what notation of direction you are using,

e.g. is it N55°E OR simply 55° up from the positive x-axis direction OR

I will interpret that the angle between their paths is 55°

So by the cosine law

x^2 = 8^2 + 12^2 - 2(8)(12)cos55°

= 97.87332..

x = √97.87....

=appr 9.89 km

If your angle is different from my interpretation, just make the changes at the end of the equation.

- maths -
**bushra**, Sunday, February 17, 2013 at 10:42am
i m having a problem that the angle between north east will be 35 or 55 because if we are considering north east the hiker is moving fom north to east

## Answer This Question

## Related Questions

- maths - a hiker walk due east at 4km per hour and a second hiker starting from ...
- calculas maths - .Two hikers begin at the same location and walk in ...
- Science (Physics) - 1.A hiker started to walk from her campsite heading east ...
- math - Edna and Nancy leave the house of a common friend at the same time and ...
- Physics: Vectors - A hiker walks 10.0 km[NE], 5.0 km[W], and then 2.0 km[S] in 2...
- Physics - a hiker walks 14.7 km at an angle 35 degrees south of east. Find the ...
- Physics - a hiker walks 14.7 km at an angle 35 degrees south of east. Find the ...
- math - A man travels 4km due north,then travels 6km due east and further travels...
- maths - a girl walks 4km due east and then 7km due north, how far is she away ...
- physics - A person walks 25 degree north of east for 31 km. How far would the ...

More Related Questions