英语翻译Flying a kite A girl flies a kite at a height of 300 ft,
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英语翻译
Flying a kite A girl flies a kite at a height of 300 ft,the wind carrying the kite horizontally away from her at a rate of 25 ft /sec.How fast must she let out the string when the kite is 500 ft away from her?
Flying a kite A girl flies a kite at a height of 300 ft,the wind carrying the kite horizontally away from her at a rate of 25 ft /sec.How fast must she let out the string when the kite is 500 ft away from her?
风筝的垂直高度是300米
风筝的水平速度是25英尺每秒
凯特到风筝的距离是500米
那么凯特放线的速度有多快呢?
楼主只要画个三角形答案就出来了,
凯特放线的速度应该是
25×5╱4=31.25英尺每秒
风筝的水平速度是25英尺每秒
凯特到风筝的距离是500米
那么凯特放线的速度有多快呢?
楼主只要画个三角形答案就出来了,
凯特放线的速度应该是
25×5╱4=31.25英尺每秒
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