f.3applications of trigonomety

2011-05-13 1:54 am

pater is walking along a road with a constant speed of 2 km/h .If the angle that the road makes with the horizontal is 4 , find the vertical distance he can travel in 2 hours.

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pingshek

2011-05-13 8:27 am

✔ 最佳答案

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參考: miraco

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