IB MAI HL Geometry & Trigonometry Topic 3.4 Trigonometric Functions (id: 0bf366a

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 tip of a large wnhtjlx l/ocx+/) n;: uind turbine's3 m ka3wu:4 l6shdrj 40d2kirh *k+ozu blade rotates at a constant speed on a windy day. Its height, H , in metre2krkkudj3ad*l 3 mo4hri:suz64 wh+ 0s, above the ground is modelled by the function
H(t)=52sin(${60}^{\circ }\times$t)+80,
where t is the elapsed time, in seconds, since the turbine was accelerated to its max speed.
1.Write down the minimum height of the blade's tip above the ground. $H_{min}$ =   
2.Find the height of the blade's tip above the ground after 8 seconds.H(8 )≈   
3,Find the time it takes for the blade's tip to complete one full revolution.

参考答案:
空格1: 28±2%  空格2: 125±2% 


本题详细解析:

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