a) Sketch, on the same diagram, the graphs of y = 2cos x and y = cos
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a) Sketch, on the same diagram, the graphs of y = 2cos x and y = cos² x for −360° ≤ x ≤ 360°.
b) State the number of solutions of the equation 2cos x = cos² x for −360° ≤ x ≤ 360°.
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Related Book For
Complete Pure Mathematics 1 For Cambridge International AS & A Level
ISBN: 9780198427438
2nd Edition
Authors: Jean Linsky, Brian Western, James Nicholson
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