a. Sketch the curve y = cos x for 0 x 360. b. Solve the

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a. Sketch the curve y = cos x for 0° ≤ x ≤ 360°.

b. Solve the equation cos x = 0.5 for 0° ≤ x ≤ 360°, and illustrate the two roots on your sketch.

c. State two other roots of cos x = 0.5, given that x is no longer restricted to values between 0° and 360°.

d. Write down, without using your calculator, the value of cos 240°.

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Cambridge IGCSE And O Level Additional Mathematics

ISBN: 9781510421646

1st Edition

Authors: Val Hanrahan, Jeanette Powell

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Question Posted: Sep 03, 2021 01:54 AM

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a. Sketch the curve y = cos x for 0 x 360. b. Solve the

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a The curve ycosx is a periodic function with period 360 It oscil...View the full answer

Cambridge IGCSE And O Level Additional Mathematics

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