问题描述：
来个数学高手解决这英文题目~!~!~~~
A plane is flying due north at 400km/h. A wind from due west is blowing at 40km/h, which blows the plane slightly off coures. what is the plane's new direction(angle)and new velocity?
顺便问下,vertical velocity是什么意思?
A plane is flying due north at 400km/h. A wind from due west is blowing at 40km/h, which blows the plane slightly off coures. what is the plane's new direction(angle)and new velocity?
顺便问下,vertical velocity是什么意思?
问题解答：
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