英语翻译A ship is 45 miles east and 30 miles south of a port.The captain wants to sail directly to port.What bearing should be taken?

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英语翻译Ashipis45mileseastand30milessouthofaport.Thecaptainwantstosaildirectlytoport.Whatbearingshouldbe

英语翻译A ship is 45 miles east and 30 miles south of a port.The captain wants to sail directly to port.What bearing should be taken?
英语翻译
A ship is 45 miles east and 30 miles south of a port.The captain wants to sail directly to port.What bearing should be taken?

英语翻译A ship is 45 miles east and 30 miles south of a port.The captain wants to sail directly to port.What bearing should be taken?
一条船在某点的东边45km,南边30km处,问船长应该往哪个方向开才能到那一点.
解,设方向与西边的夹角为a则
tana=30/45=2/3
a=arctan2/3=33°41' 24"
∴船长应该朝西偏北33°41' 24"方向行驶

port---captain 的距离=54.08KM  

sochinlar 的对,我的port---captain位置弄反了

一条船在距码头的东边45英里,南边的30英里,船长想要准确的开到码头,该怎么走?(具体的不是码头,就是停住地之类的)