Asked by Art
A boy works 50m on a bearing 025 and then 200m due east. How far is he from his starting point
Answers
Answered by
mathhelper
How can you "work 50 m" ??
anyway, make a sketch and you should be able to see that ...
using the cosine law:
distance^2 = 50^2 + 200^2 - 2(50)(200)cos 115°
evaluated the right side, noting that cos115 will be negative,
then take the square root to get "distance"
anyway, make a sketch and you should be able to see that ...
using the cosine law:
distance^2 = 50^2 + 200^2 - 2(50)(200)cos 115°
evaluated the right side, noting that cos115 will be negative,
then take the square root to get "distance"
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