# Answer to Question #13785 in Vector Calculus for stephanie lee

Question #13785

Jetty a on the mainland and jety B on a resort island are 36km apart.The bearing of jetty B is 060 degree celcius from jetty A. A ferry, with an average speed of 10 meter per secondin still water, travels between jetty A and jetty B.

1. a) Suppose that the current flows from west to east with a speed of v meter per second, where v<10.Using a vector method, show that the course on which the ferry must be steered in order to travel from jetty A to B is θ degree celcius east of north, where θ=60 degree celcius-inverse sin(v/20)

1. a) Suppose that the current flows from west to east with a speed of v meter per second, where v<10.Using a vector method, show that the course on which the ferry must be steered in order to travel from jetty A to B is θ degree celcius east of north, where θ=60 degree celcius-inverse sin(v/20)

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