The diagram shows a semi circle with diameter EF of length 12 cm Angle GEF radians and the shaded region has an area of A cm 2 a Show that A 36 18 sin 2 b Given that is increasing at a rate of 0 05 radians per second, find the rate of change of A when 6 radians E 12 cm...

A A 12 x 6 x 12cos x s in 2 2 x x 62 ...

The diagram shows a semi-circle with diameter EF of length 12 cm. Angle GEF = radians

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The diagram shows a semi-circle with diameter EF of length 12 cm.

Angle GEF = θ radians and the shaded region has an area of A cm².

a. Show that A = 36θ + 18 sin 2θ.

b. Given that θ is increasing at a rate of 0.05 radians per second, find the rate of change of A when θ/6 radians.

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Cambridge IGCSE And O Level Additional Mathematics Coursebook

ISBN: 9781108411660

2nd Edition

Authors: Sue Pemberton

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Question Posted: Sep 02, 2021 12:50 AM

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The diagram shows a semi-circle with diameter EF of length 12 cm. Angle GEF = radians

Question:

E 12 cm

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A A 12 x 6 x 12cos x s in 2 2 x x 62 ...View the full answer

Cambridge IGCSE And O Level Additional Mathematics Coursebook

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