The diagram shows a sector OAB of a circle with centre O and radius r. Angle AOB

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The diagram shows a sector OAB of a circle with centre O and radius r. Angle AOB is θ radians. The point C on OA is such that BC is perpendicular to OA. The point D is on BC and the circular arc AD has centre C.

i. Find AC in terms of r and θ.
ii. Find the perimeter of the shaded region ABD when

giving your answer as an exact value.

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Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

ISBN: 9781108407144

1st Edition

Authors: Sue Pemberton, Julian Gilbey

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Question Posted: Mar 09, 2023 07:05 AM

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The diagram shows a sector OAB of a circle with centre O and radius r. Angle AOB

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0 8 rad D B C A

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From the given figure i AC in terms of r and AC OA OC r r Cos as Cos ...View the full answer

Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

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