The diagram shows a sketch of y = cos x. a. Use your calculator to find the

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The diagram shows a sketch of y = cos x.

a. Use your calculator to find the principal solution to the equation cos x = 0.4.

b. Use the graph and your answer to part a to find solutions to the equation cos x = ± 0.4 in the range 0 ≤ x ≤ 360°.

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Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS

ISBN: 9781292183398

1st Edition

Authors: Greg Attwood

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Question Posted: Jul 15, 2023 02:39 AM

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The diagram shows a sketch of y = cos x. a. Use your calculator to find the

Question:

y 90 180° 270° 360° x

Step by Step Answer:

a Using a calculator we can find the principal solution to the equation cos x 04 by taking the inve...View the full answer

Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS

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