a hiker walks in the direction 153 and stops when she is 20 km south of her starting point. how far did she walk? please explain as well?
回答 (2)
2016-02-28 1:32 pm
You mean her azimuth heading is 153°? If she is 20 km south, then the change in her northing is -20 km.
change in northing = (distance)cos(θ)
change in easting = (distance)sin(θ)
Solve this equation, where d is the distance traveled.
dcos(153°) = -20
change in northing = (distance)cos(θ)
change in easting = (distance)sin(θ)
Solve this equation, where d is the distance traveled.
dcos(153°) = -20
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