simple f.2 maths 一條

2009-04-18 2:40 am
introduction to Trigonometric Ratios
1.a wire of 12m long is attracted to the tops of two vertical posts which are 6m and 10m tall.Find the angle it makes with the taller post.

回答 (2)

2009-04-18 8:51 am
✔ 最佳答案
The answer is as follows:

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2009-04-18 3:04 am
cos0=(10^2+6^2-12^2)/(2x10x6)

0=93.8度


5知岩5岩..
參考: my knowledge


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