SOLUTION: A ship sails for 20km on a course of S 20 degrees W and then 25km on a course of S 25 degrees W. Calculate: a) how far the ship is from its original point b) how far west the shi

Algebra ->  Trigonometry-basics -> SOLUTION: A ship sails for 20km on a course of S 20 degrees W and then 25km on a course of S 25 degrees W. Calculate: a) how far the ship is from its original point b) how far west the shi      Log On


   



Question 1109792: A ship sails for 20km on a course of S 20 degrees W and then 25km on a course of S 25 degrees W. Calculate:
a) how far the ship is from its original point
b) how far west the ship is from its original point
c) the bearing of the ship now from its original point

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A ship sails for 20 km on q course S 20° W and then 25 km on a course S 25° W.
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2 sides and the included angle --> Cosine Law to find the 3rd side.
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Calculate
a) How far south the ship is from its original point
Cosine Law
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and how far west the ship is from its original point
It's a right triangle after finding the 3rd side.