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Mathematics 20 Online
OpenStudy (anonymous):

The diagram shows a semicircle ACB with centre O and radius r. The angle BOC is x radians. The area of the shaded segment is a quarter of the area of the semicircle. {drawn below} (i) Show that x satisfies the equation \[x={3 \over 4}\pi - \sin x\]

OpenStudy (anonymous):

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