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IB MAI HL Geometry & Trigonometry Topic 3.4 Trigonometric Functions (id: 4023f32

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admin 发表于 2024-2-16 23:40:09 | 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]
Alexandros monitors the temperature durinx9nqu;4vx g dgbroh/8 *x ez.6g am73v;i y-g wq ;5mv;zywm lv*g particular day in Athens.
The table below shows some of his findings.


Based on his observations, Alexandros concludes that the temperature, T, in $^{\circ}C$, during the day can be modelled by the equation
T​=asin(b(t−c))+d,0≤t≤24,​where t is the elapsed time, in hours, since midnight.
1.Write down the value of:
(1)a;   
(2)d.   
2.Find the value of b. ≈   
3.Find the smallest possible value of c, given c>0.   
4.Find the time, in hours and minutes, when the temperature first reaches $35^{\circ}C$ during the day.




参考答案:
空格1: 6.9±2%空格2: 32.3±2%空格3: 0.262±2%空格4: 10.2±2%


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