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IB MAI HL Geometry & Trigonometry Topic 3.4 Trigonometric Functions (id: 1072aa7

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admin 发表于 2024-2-9 17:05:14 | 显示全部楼层 |阅读模式
本题目来源于试卷: IB MAI HL Geometry & Trigonometry Topic 3.4 Trigonometric Functions,类别为 IB数学

[填空题]
The water depth, D, in m-r3nj9 kgjtej89 zbx :etre7/t- r 2rsmycq a15c 7xnbjm1is, in a harbour on a particular can be modelled by the eq 7r/2tm5i1q 1ncj byc- smxa7ruation
D=3sin($30^{\circ}$$\times$t)+5,0≤t≤24,
where t is the elapsed time, in hours, since midnight.
1.Draw the graph of D versus t on the grid below.

2.Find the lowest and highest depths of water in the harbour, and the times when they occur.  $D_{min}$ =    t =       ; $D_{max}$ =    t =   
3.A large boat has a draught of 2.5 metres. Decide whether the boat will be able to enter the harbour at 8 pm.




参考答案:
空格1: 2±2%空格2: 9±2%空格3: 1±2%空格4: 8±2%空格5: 3±2%空格6: 15±2%


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