IB MAI HL Geometry & Trigonometry Topic 3.2 Trigonometry (id: 1d5830bae)

本题目来源于试卷: IB MAI HL Geometry & Trigonometry Topic 3.2 Trigonometry，类别为 IB数学

[填空题]
A windscreen wiper blade has a length4 9a9fuuk52 dh bat+gd of 0.45 m. When it's raini9y onifjj8)d k:i*k si0:bit)ng and the blade is in motion, it ij8i0: ktdoikb)) s* 9i: fnjymoves through an arc angle of ${\displaystyle \frac{3\pi }{4}}$ radians.


1.Determine the area of the windscreen wiped by the blade.  $m^2$
2.Determine the arc length travelled by the outer edge of the blade.  m

参考答案:
空格1: 0.239±3%  空格2: 1.06±3% 


本题详细解析:

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