Asked by ymme
At a certain time, a lighthouse is south of a ship. Thirty minutes later, the ship bears N40°20'E from the lighthouse. If the ship is sailing east at 20 kilometers per hour,find the distance of the ship from the lighthouse at each time of observation.
Answers
Answered by
Reiny
I see a right-angled triangle with a horizontal side of 10 km and its opposite angle 40°20'
for original position SL
tan 40°20' = 10/SL
SL = 10/tan40°20' = 11.7776.. km
for final position LS'
sin40°20' = 10/LS'
you finish it, and state in the required accuracy
for original position SL
tan 40°20' = 10/SL
SL = 10/tan40°20' = 11.7776.. km
for final position LS'
sin40°20' = 10/LS'
you finish it, and state in the required accuracy
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