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A-maths問題

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Thx! (@⌒ー⌒@)ノ 圖片參考:http://imgcld.yimg.com/8/n/HA01013298/o/701105290029913873453200.jpg

最佳解答:

Using vector notation, his velocity can be represented by 4i + 5j So, magnitude = √(4^2 + 5^2) = 6.403 m/s angle = arctan(5/4) = 51.3402 The direction is N38.66E

其他解答:31C9A75CB3B14398
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