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An army cadet is involved in a compass exercise. He leaves point O and walks 50m due west to point A. He then walks 80m due north to point B and finally 60m on a bearing of 320 deg to point C.

a) Illustrate this information on a sketch
b) Calculate the distance and bearing of B from O
c) Calculate the distance and bearing on which he must walk in order to return from C to O

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