Question 1109792
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.