Question

A boat sails 4km on a bearing of 038 degree and then 5kmon a bearing of 067 degree.
How far is the boat from its starting point?
Calculate the bearing of the boat from is starting point
you sail on a heading; you take a bearing.
4cis52° + 5cis23° = 8.7cis36°
so the boat is 8.7 km on a bearing of 54°

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